Update 3/23/24. “Prevagen Improves Memory.” That's the bold statement for this dietary supplement. You have probably seen commercials for this jellyfish memory supplement and wondered if it really worked or whether it was a scam? In this Prevagen review, you'll learn the results of the clinical trials so you can understand them better. You'll learn the pros and cons of this supplement too. Does it have any side effects? That will be discussed too. Let's see what the research says.
What Is Prevagen?
Prevagen (pronounced prev-uh-gen) is not a prescription drug. Rather, it's a brain health and memory supplement sold online and at local stores like CVS, Walmart, and others. Supplements that are supposed to improve memory and focus are called nootropics.
You've likely seen the TV commercials for this supplement:
This supplement contains an ingredient from jellyfish called apoaequorin which is not in other memory products, such as:
See those reviews for additional information on those supplements.
How Does Prevagen Work?
Prevagen distinguishes itself from typical brain supplements that claim to enhance memory through increased cerebral blood flow. Rather than focusing on oxygen delivery, Prevagen targets the reduction of excess calcium accumulation within brain cells. This unique mechanism presents an innovative approach to memory support.
Prevagen Ingredients
Prevagen features a single key component: apoaequorin, a protein derived from jellyfish, scientifically pronounced as apo-a-kwar-in. The supplement contains 10 mg of apoaequorin. This unique protein is purported to function by diminishing surplus calcium levels within the brain. Elevated calcium levels in the brain have been associated with decreased cognitive function, suggesting that mitigating calcium accumulation in brain cells may enhance memory.
Additionally, the supplement contains 50 mcg of vitamin D, which is quite a high dose, at 250% of the percent Daily Value. Diminished vitamin D levels have been seen in older adults suffering from memory deficits. Some research suggests high-dose vitamin D supplements might beneficially improve non-verbal (visual) memory in healthy adults, especially those whose initial vitamin levels are less than 75 nmol/L.
Other Ingredients
The supplement also has these other ingredients too:
- White rice flour
- Salt
- Magnesium stearate
- Acetic acid
- Disodium EDTA
These additional ingredients play no role in the brain health benefits of the supplement.
What Is Apoaequorin?
Apoaequorin, the active ingredient in Prevagen, is a protein originally isolated from a species of jellyfish called Aequorea victoria, commonly known as the crystal jellyfish. One of the most important characteristics of apoaequorin is its ability to bind to calcium ions. When it binds to calcium, it undergoes a chemical reaction that emits blue light.
It's claimed that apoaequorin may help support brain health by modulating calcium levels within neurons. Excessive calcium accumulation in neurons has been linked to various neurodegenerative conditions and cognitive decline. By potentially regulating calcium levels, apoaequorin is proposed to support neuronal function and cognitive processes such as memory.
Prevagen Research
At Prevagen.com/Research several clinical studies are listed as evidence. Here is a summary of those studies, along with my opinions:
Prevagen Madison Memory Study
The Madison Memory Study (named for Madison, Wisconsin, where Quincy is based) is the flagship clinical trial often touted as proof of how well Prevagen works. Quincy Bioscience refers this experiment the “Madison Memory Study: A Randomized, Double-Blinded, Placebo-Controlled Trial of Apoaequorin in Community-Dwelling Adults.” When it was published, the name was changed to Effects of the Calcium Binding Protein Apoaequorin on Memory and Cognitive Function in Older Adults.
Study Summary
- Subjects: 218 people aged 40-91 years of age. Two hundred and eleven people completed the study.
- For 90 days, people were randomly given 10 mg of Apoaequorin or a placebo.
Madison Memory Study Results
Those taking apoaequorin improved verbal learning and recall ability by about 15%. This sounds good, but this was only seen in those with no or mild memory problems.
In other words, apoaequorin (Prevagen) only seemed to work in people who were basically normal.
Problems With The Madison Memory Study
In my view, The Madison Memory Study faces several issues:
- Disparity in group sizes: The apoaequorin (Prevagen) group outnumbered the control group.
- Absence of pre-and post-treatment calcium level assessments.
- Duration discrepancy: Although the study lasted 3 months, the information presented on Prevagen.com implies a 2-year duration (December 3, 2009, to April 13, 2011). This raises questions about the inconsistency in reported timelines.
Additionally, all the researchers worked for Quincy Biosciences, the company that makes Prevagen.
Here is a breakdown of the other studies listed for this supplement:
Safety Study 1
This is a lab rat study showing Apoaequorin is safe. Quincy Biosciences and its researchers sponsored the study.
Safety Study 2
This is a test tube study sponsored by Quincy Biosciences and their researchers.
Safety Study 3
This is a rat study sponsored by Quincy Biosciences with independent researchers.
Previous Research
In the past, the supplement website had listed other research. Here is a summary:
Impact of Prevagen on Memory
Summary of the study:
- Subjects: 56 generally healthy people were given Prevagen for 90 days.
- Results: After 90 days, people reported on questionnaires that their memory was better.
My thoughts
- This study does not appear to be peer-reviewed.
- They don’t disclose the ages of the people.
- This study was conducted as an “open-label” trial, indicating that all participants were aware of who was receiving the supplement. This transparency could potentially impact the study's results, as participants' awareness of their treatment allocation might influence their behavior and responses.
Impact of Prevagen on Sleep Quality
Summary of the study:
- Subjects. 55 generally healthy people were followed for 90 days.
- Results. People getting Prevagen reported getting more sleep at night.
My thoughts
- This study doesn't seem to have undergone peer review.
- This appears to be a replication of a previous investigation.
- Being an open-label study, it could diminish the significance of the findings in the eyes of experts.
Can Prevagen Make You Fearless?
Fear memory, essential for recalling fearful situations, aids in safeguarding individuals from potential harm. A study conducted by researchers at the University of Wisconsin-Milwaukee noted a decrease in fear memory among adult and older middle-aged rats administered with apoaequorin. While this finding is intriguing, it's crucial to note that its effect on humans remains unproven. Moreover, the method involved directly injecting apoaequorin into the rats' brains, leaving uncertainty regarding the effectiveness of apoaequorin supplements in reducing fear memory in both rats and humans.
How Much Sodium Is In Prevagen?
According to the label, each vegetable capsule contains 10 mg of sodium, constituting less than 1% of the recommended daily sodium intake. This minimal sodium content is unlikely to pose concerns, particularly for individuals with hypertension.
Is Apoaequorin Safe?
The Quincy website has released a clinical trial assessing the safety profile of apoaequorin. The study, conducted on rats, revealed that even at significantly high doses, apoaequorin demonstrated no observable effects, which is reassuring.
Moreover, in a separate investigation, researchers observed that apoaequorin is unlikely to trigger allergic reactions, which is another positive finding. Additionally, the researchers highlighted that apoaequorin is readily digested by pepsin, a common enzyme responsible for breaking down proteins in the stomach. This intriguing statement prompts questions about the digestive process of apoaequorin and its potential mechanisms of action.
Is the Apoaequorin Natural?
According to the Prevagen website, “Apoaequorin, a protein initially found in jellyfish, is now manufactured at our cGMP compliant and NSF certified facility in Wisconsin.”
This suggests that Apoaequorin is synthesized in a laboratory rather than extracted from jellyfish. Therefore, the production of Prevagen does not involve the use or harm of jellyfish, which is a positive aspect.
Extra Strength Prevagen
Is Extra Strength Prevagen more effective than the regular version? The extra-strength variant contains 20 mg of apoaequorin, while the regular-strength version contains 10 mg. Here's a comparison of the three different types of Prevagen side by side to highlight the distinctions:
| Prevagen Regular Strength | Prevagen Extra Strength | Prevagen Chewables (1 tablet) |
|---|---|---|
| Vitamin D3, 50 mcg (250%DV) | Vitamin D3, 50 mcg (250%DV) | Total carbs 1g |
| Apoaequorin 10 mg | Apoaequorin 20 mg | Apoaequorin 10 mg |
Extra Strength contains 20 mg of apoaequorin compared to 10 mg in the regular strength variant. Additionally, Prevagen Chewables consists of 10 mg of apoaequorin. It's worth noting that there's also an extra-strength chewable version (not shown in the table) with 20 mg of apoaequorin.
Prior to purchasing extra-strength Prevagen, it's essential to note that research primarily focuses on the regular strength (10mg) variant. Currently, no clinical evidence suggests that taking 20 mg is superior to 10 mg.
How Much Vitamin D Is In Prevagen?
The Supplement Facts label tells us it has 50 micrograms (mcg) of vitamin D. This is about 800 IU.
Prevagen vs. The Competition
Let's now take a quick look at how this product compares to other memory supplements.
Prevagen vs. Neora (Nerium) EHT
Nerium EHT, a supplement developed by the company now known as Neora, features a unique compound derived from coffee called Eicosanoyl-5-HydroxyTryptamide (EHT). While research exists on the EHT molecule, there's limited comparative study between Nerium EHT and Prevagen. Both supplements are purported to operate via distinct mechanisms. However, the efficacy of combining them remains uncertain.
See the Nerium Neora EHT Review
Prevagen vs. Focus Factor
Focus Factor stands out as a widely recognized memory supplement, often featured in television commercials. Contrary to Prevagen, it comprises a distinct set of ingredients, offering a more comprehensive blend, akin to a multivitamin. Despite their popularity, there's a lack of clinical trials directly comparing Focus Factor to Prevagen, leaving uncertainties about their relative efficacy or potential synergistic effects.
Prevagen vs. Procera AVH
Procera AVH boasts ingredients reputed for minimizing brain chemicals and enhancing oxygen circulation. Its formulation differs from that of Prevagen. Comparative studies between Procera AVH and Prevagen have been conducted.
See the Procera AVH review
Prevagen vs. Neuriva
Neuriva emerges as a highly sought-after memory supplement. Despite both featuring only two active ingredients, they diverge significantly. Neuriva's formulation includes coffee cherry and Phosphatidylserine. While the memory research on the coffee cherry component is intriguing, no comparative studies have been undertaken between these two supplements.
See the Neuriva vs. Prevagen Review
Prevagen vs. Exercise For Memory Improvement
Numerous studies indicate a correlation between exercise and memory as well as overall brain function. If this holds true, integrating exercise alongside Prevagen usage might enhance its efficacy. However, concrete evidence is required to confirm this hypothesis. Notably, the evidence supporting the memory benefits of exercise surpasses that of any memory supplement. For individuals capable of engaging in physical activity, even simple activities like walking have been demonstrated to promote brain health.
Prevagen vs. Adderall
Adderall, a prescription medication commonly prescribed for attention deficit disorder (ADD) and attention deficit hyperactivity disorder (ADHD), is distinct from Prevagen despite the prevalence of Prevagen TV commercials. It's crucial to recognize that Prevagen functions differently from Adderall, making them non-interchangeable. Additionally, without clinical trials, it's impossible to determine if Prevagen could offer similar or enhanced benefits compared to Adderall.
Who Makes Prevagen?
The company is called Quincy BioScience. The business was started in 2004. The website is Quincybioscience.com. The company address is 726 Heartland Trail, suite #300 Madison, WI 53717. According to the FTC, another name for the company is Sugar River Supplements.
Interestingly, this is the same address as another company, called Catalent Pharma Solutions (Catalent.com). This company bills itself as “…the world's #1 drug development, delivery and supply partner for drugs, biologics, and consumer health products…”
Could this be the company that makes Prevagen?
Quincy BioScience is not a Better Business Accredited company. The BBB gave the company an A+ rating when this review was updated.
Contact Prevegan
On Prevagen.com the company contact number listed is 888-565-5385.
Another contact number for Quincy BioScience is 608- 827-8000.
Email the company at Contact@QuincyBioscience.com
Prevagen Customer Complaints
Various people have had issues with this supplement. Complaints seen when scanning various websites are as follows:
- The cost (about $2 per pill).
- Claims that prey on people's fears.
- Complaints about reoccurring charges.
- Side effects.
- Complaints it did not work.
On the flip side, other online testimonials say they were happy with the results they experienced.
The Prevagen Lawsuit
Quincy Bioscience has been involved in legal disputes with. Here's a summary of the controversy.
In 2015, a class action lawsuit was issued, alleging that Prevagen didn't work. In the pdf file of the lawsuit (click to download), it's argued that apoaequorin is “completely destroyed by the digestive system and transformed into common amino acids no different than those derived from other common food products such as chicken, cold cuts, hamburgers, etc.”
Remember, one of the Prevagen studies summarized above did say apoaequorin is digested by pepsin…
The maker of Prevagen disagrees with the class action lawsuit and says that this does not happen. In January 2017, the FTC along with New York Attorney General filed a lawsuit against the Quincy Bioscience stating that they didn't feel the company had sufficient proof Prevagen worked as advertised. Here is a summary 2017 FTC lawsuit.
In March of 2024, a jury verdict was reached in the case of The People of the State of New York v. Quincy et al. The jury determined that Quincy violated NY laws and was “materially misleading” by advertising that Prevagen was clinically shown to be able to reduce memory deficits associated with normal aging. The jury also found that claims such as Prevagen was able to improve memory within 90 days were not supported by reliable proof. Ironically, the jury also stated that the claim was not materially misleading. On their website, Quincy Biosciences stated that this was a win for them because it highlighted that the NY Attorney General failed to prove the company was engaged in deceptive advertising.
Prevagen And The FTC
The FTC has long maintained that Prevagen doesn't work. In 2017, the FTC alleged Quincy Bioscience was making deceptive claims about their supplement. One of the issues the FTC brought up is that one of the studies on the supplement noted the jellyfish protein, apoaequorin, was digested in the stomach. If its digested, how does it make it to the brain?
Can Prevagen Improve Memory In Those With Alzheimer’s?
There is currently no evidence supporting the efficacy of the supplement or its primary component, apoaequorin, in improving Alzheimer’s disease or other forms of dementia. Despite thorough investigation, no conclusive evidence has been found either affirming or refuting its effectiveness. In the Madison Memory Study mentioned previously, apoaequorin appeared to offer benefits solely to individuals with no memory issues or mild impairment.
Can Prevagen Help Concussions?
Currently, there is no evidence the supplement helps the brain heal faster from traumatic brain injury.
See the review of Neora EHT review for more on this.
Can Prevagen Improve Memory in Cats & Dogs?
In one investigation, researchers found apoaequorin may help older dogs with memory and learning. More studies need to be conducted to confirm this.
Can We Absorb Prevagen?
In the aforementioned Safety study, it was affirmed that Prevagen is deemed safe, emphasizing that “Apoaequorin is readily digested by pepsin,” a prevalent protein-digesting enzyme.
This raises questions about the absorption of Prevagen into the body and, specifically, the brain. Further research is necessary to ascertain whether the supplement's key ingredient can penetrate the bloodstream and reach the brain.
Where To Buy Prevagen
This supplement is very popular. It can be purchased stores like Wallgreens, Bed Bath and Beyond, CVS, RiteAid, Target, Walmart, Harris Teeter, Vitamin Shoppe, GNC, Wegmans, ShopKo, and Costco.
How Much Does It Cost?
Price varies. I have seen it for between $30-$60 a bottle.
How Long Until Prevagen Works?
According to research findings, noticeable effects from the supplement may require up to three months. The efficacy is also influenced by the specific type and severity of memory issues experienced. Notably, the supplement includes a 30-day money-back guarantee. Thus, if taken for the recommended 90 days, reimbursement would only apply to the last bottle purchased.
Prevagen Side Effects
The safety study has indicated that apoaequorin appears to be safe, even at high doses, for up to 3 months in rats. While the supplement is likely safe for healthy individuals, it's important to consider several factors. Here are some considerations to keep in mind (though this list is not exhaustive):
- Begin with a lower dosage than recommended for the first week to assess your response.
- Discontinue Prevagen usage at least 2 weeks before undergoing surgery.
- Consult with your doctor and pharmacist if you are pregnant or breastfeeding.
- Consult with your doctor and pharmacist if you are taking any prescription medication.
- Consult with your doctor and pharmacist if you are taking any medication for memory or dementia.
In the testimonials provided, some individuals have reported needing to increase the dosage of Prevagen due to its diminished effectiveness. Additionally, one person noted experiencing slurred speech, dizziness, and a lack of awareness of their surroundings.
Concerns have been raised regarding whether Prevagen may lead to osteoporosis. As the supplement is purported to remove calcium from the brain, there is speculation about whether it could also deplete calcium from the bones, potentially causing osteoporosis. While this is uncertain, no studies have examined bone density after prolonged Prevagen use. Furthermore, research is still required to confirm Prevagen's purported mechanism of removing calcium from the human brain.
Prevagen Pros & Cons
To help people better understand this supplement, here's a quick rundown of what I liked and didn't like. Take this for what it's worth.
| What's Good | What's Not So Good |
|---|---|
| Website shows studies | Studies may have issues |
| Company funds research on their product | Medication interactions need more study |
| Only 1 active ingredient | Lack of non-company sponsored research |
| Appears safe. No side effects reported in human studies | Company has had FDA and FTC run-ins |
| Might help people who have no memory problems | Does it help people with dementia etc? More research needed |
| BBB Accredited business since 2012 |
Does Prevagen Work?
Despite the studies, I’m not yet convinced. The research could be better in my opinion. I'd like to see research proving that Prevagen can cross the blood-brain barrier and improve memory in people with memory problems.
My dear mother had Alzheimer’s disease at my age of 75, and with a wonderful 9-year-old daughter, I can’t afford to go there. I’ve taken Prevagen and just about every other brain supplement on the market. I’m not sure which ones are working, but so far, so good. I’m using the shotgun approach to brain health, and I still practice medicine part time.
Glad you are doing so well Bill! 🙂
I had a very negative experience with Prevagen. I purchased the Prevagen Regular Strength (10mg) as an over the counter supplement from CVS. The description on the box stated that is has been shown to help with mild memory loss. I believe the claims from the manufacturer (Quincy BioScience) are false and misleading.
The literature included and the website states they “not aware of any negative interactions with Prevagen” and other medications. The website also states that they “are not aware of any side effects.”
On Thursday, October 12th, after purchasing at CVS, I took ½ tablet with water at approximately 5:30pm. By 6:30 I was slurring my words so badly that my family members could not understand me. I felt light-headed, dizzy, and unaware of my surroundings.
I visited my primary care physician the next day, he stated that the symptoms were consistent with Transient Ischemic Attack (TIA) but after my exam, he was 99% sure it was Prevagen. However, he suggested I follow up with a neurologist and undergo further testing to be sure.
I am writing this review in hopes that future users will heed my warnings. This is not a safe product. After my experience, I have read several hundred similar reviews on numerous websites. Many consumers took this drug thinking it was safe The manufacturer is making false claims stating that there are no known side effects.
I am warning other consumers to take caution before using this supplement.
Hi Patricia, I am so very sorry to hear what happened to you! I don’t think I’ve ever heard of someone having a TIA (“mini stroke”) from Prevagen. I’d be curious what made your doctor “99% sure” the cause was Prevagen. Did your doctor give you any reason why he was so sure of this?
In your research, have you seen anyone else talking about strokes after taking Prevagen? I have not but if you have, please share.
Again, so sorry that happened to you. I hope you are better now and not having any lingering effects.
I have taken Prevagen for more than 2 years and I think it is a miracle. My problem is that to have it be effective I have to increase the dosage about every six months. I would recommend it. I would like to see more studies on Prevagen.
I tried Focus Factor and it didn’t do anything for me. I have recently started using Dr. Gundry’s Primal Plants and it has helped my memory a little but it has helped my arthritis a lot and I would recommend it.
If you are interested in it, Dr. Gundry (He did his internship at world famous U of M Hospital) he has a variety of videos on youtube.com. His teaching is to have better health through diet and supplements. It is not a weight loss diet but you probably will lose weight as he did much to his surprise.
Margaret, I’ve heard of Dr. Gundry. hes got several supplements. His supplements are on my list of things to take a look at. Stay tuned.
I recently found out that I have brain atrophy at 46 yrs. old. Dr. said it was normal, but I was devastated. Then I saw the Prevagen commercial on TV and I thought Oh My God there’s the answer. I ran out and spent a lot of money but I thought it was well worth it! I’m gonna get my memory back intact!
Afterwards, I decided to do some research with a very hopeful and open minded thinking and high hopes. I read all of the reviews on Amazon. I read the info on Prevagen’s site. A few others. Then, I stumbled upon the FDA’s site on Prevagen’s scientific studies. They had many of their neuroscientist test the drug and has stated that there is no way that the animal’s biological protein would be able to survive a person’s digestive system and actually make it to a person’s brain.
Then, I was worried about drug interactions as I am on psych meds and this seems like this would also be one. Looked it up. The answer; NONE. That right there told me that something is not right. FDA said that this is a placebo and seems to fit right into the category. People may feel the effects of the placebo because they “believe” they do. Psychology at it’s best.
Yes, they are making millions on this, but why didn’t FDA approve? Because it DOESN’T WORK! Think about it, if it did work, can you imagine how many millions of dollars they would make selling it as a prescription from a doctor. Instead, they making a small million selling as an expensive “supplement”. I returned it right away after getting a migraine after all this!
I wasn’t able to find anything on Prevagen not being able to go through your digestive system. However, it is my understanding that this is a synthetic product made to do the same thing that chemical from the jelly fish does.
It is a wonder drug to me.
My problem is that I have to increase the dosage about every six months. I think you severe reaction was caused by something else and you should consult a specialist for that before anything else happens to you.
Also I purchased from eBay as it is usually quite a bit cheaper than the drug store. The drug store is so expensive that I wouldn’t be able to afford it.
I can confirm Prevagen is on Ebay: Heres a link
Early brain atrophy can be a sign of Lewy Body Disease.
SI Horst, yes it can be and thanks for mentioning this. Here is the Lewy Body Disease website for more insights https://www.lbda.org/
Tara, its thought that regular exercise can help preserve brain atrophy. Here is a good article on this
https://www.psychologytoday.com/us/blog/the-athletes-way/201511/how-does-exercise-protect-your-brain-degeneration
Tara, if you don’t yet exercise, this is something to think about. It does not have to be intense. You dont have to lift heavy weights or run marathons. Even walking can help preserve brain mass.
Keep us posted on how you are doing Tara.
According to a review (http://www.ncbi.nlm.nih.gov/pubmed/23030514), oral apoaequorin has not yet been shown to survive digestion, cross the blood-brain barrier, or enter the human central nervous system. In fact, apoaequorin is immediately digested within seconds using in vitro simulations of digestion (http://www.ncbi.nlm.nih.gov/pubmed/23470325).
Also, even if it reached brain cells, it seems likely that it would be degraded by the endosome/lysosome system (http://www.ncbi.nlm.nih.gov/pubmed/23030514).
As a side note, anything touted as “alternative” or “all natural” is simply another marketing ploy and used to justify higher cost. True, or self-respecting, scientists do not use such terms.
Also, “all natural” molecules are not necessarily “better” than synthetic ones. For example, there is no difference between “natural” table salt (sodium chloride) and sodium chloride made synthetically in a chemistry beaker. It’s the same compound!
Also, ricin and Bacillus anthracis are two examples of things that are 100% all natural but extremely deadly. Do not fall for the “alternative” or “all-natural” hype. It isn’t necessarily “better” than manufactured compounds.
I worked in biotech for 25 years as a research scientist, out of it for 5 years in Secretech, Inc., small biotech established in Birmingham, Alabama by researchers from University of Alabama to utilize intestinal tract for immunization against viral infections. Evolutionary, intestinal tract was made to digest food, chop it to building blocks (proteins to amino acids, complex sugars to glucose, fructose etc., fat to fatty acids and glycerol) and only after that adsorb it and rebuild it to our proteins and fats.
Some small amount of not completely digested food, (let say proteins), can get through intestinal wall such as small peptides (these are for example 5-15 amino acids still in intact chain). These peptides encounter first the biggest protective immune system in our body – around our intestines, then it has to pass through liver system where they are chopped again, and only after this it will get freely to blood system.
It means there is no way intact protein can get to our blood through ingestion. And if hypothetically will, it will encounter blood-brain protective system – yet strongest in our body to protect our brain from foreign molecules. There is no way this barrier will allow crossing peptides (5-10 amino acids) to brain cells, not talking about big protein such as apoaequorin which weighs 21.4 kDa (189 amino acids). I don’t think Prevagen can cross the blood/brain barrier.
Proof that I worked in the mentioned field:
Novak M, Yamamoto M, Fujihashi K, Moldoveanu Z, Kiyono H, McGhee JR, and Mestecky J. Ig-secreting and interferon-gamma-producing cells in mice mucosally immunized with influenza virus. Advances in Experimental Medicine and Biology, 1995, 371B, 1587-1590.
Mestecky J, Moldoveanu Z, Novak M, Huang WQ, Gilley RM, Staas JK, Schafer D, and Compans RW. Biodegradable microspheres for the delivery of oral vaccines. J.Controlled Release, 1994, 28, 131-141.
You can give all the info you want but I have taken Prevagen and I think it is a Miracle. I will admit that I do have to keep increasing the dosage for it to be effective.
I am a card player and when I take my prevagen I can remember what is Trump and what the last card played and who dealt last. No way could I do that without Prevagen or something equivalent.
Do you mean that the prescription drugs and other supplements aren’t going to do us any good either. That is what your post implies.
Have you seen any reply or update to the October 2012 FDA warning letter?
Drew, I looked into it and I was not able to find anything more recent than the 2012 letter. If you or anyone else does, do let me know.
Joe, There’s too much to put in this comment, but I suggest you take a look at this post where I discuss the latest class action suit against Prevagen filed in Jan of 2015. It includes a link where you can dowload the PDF of the original complaint. http://bebrainfit.com/lifestyle/nutrition/why-alpha-brain-focus-factor-and-prevagen-miss-the-mark/
Deane, thanks for the heads up. I will take a look at it.
Deane,
Thank you for the additional information and links. It is very helpful.
Thanks for checking. I couldn’t find anything either. Your comment section has some very intelligent replies.
Drew, yes it does. I feel the comments are sometimes some of the most important parts of my reviews.
The latest consumer Health Digest has an item about the recent lawsuit, with a link to a downloadable PDF file of the complaint.
http://www.ncahf.org/digest15/15-06.html
You need the latest version of Adobe Reader to open it.
Quoting from this article:
http://www.isthmus.com/isthmus/article.php?article=41552
Far more scathing in his criticism is UW-Madison neuroscientist Baron Chanda. “This product doesn’t make sense. It’s basically quackery,” he says after reviewing some of the online Prevagen research. He says there is no way the apoaequorin protein could survive the digestive tract and make its way to the brain. Prevagen purchasers, he suggests, are basically being played for “suckers.”
The sensitivity of Quincy Bioscience to criticism may have to do with a pending lawsuit, Racies vs. Quincy Bioscience:
http://dockets.justia.com/docket/california/candce/3:2015cv00292/283980
https://www.pacermonitor.com/public/case/6659040/Racies_v_Quincy_Bioscience,_LLC
It’s possible that an utterly insignificant amount might get into the bloodstream. For example, this has been reported for bromelain.
There is a paper that reports an extremely low level of bromelain (enzymes from pineapples) being absorbed. Only about 10 micrograms was absorbed from 3 grams/day dose, which really isn’t significant. That’s a microscopic amount.
http://ajpgi.physiology.org/content/273/1/G139
But no effective amount of any large protein could be absorbed. If that were possible, it would be possible to give type 1 diabetics insulin that way and spare them the needles. That’s never going to happen.
Apoaequorin has the additional hurdle of needing to get into the brain to be effective. The blood-brain barrier blocks many molecules from entering the brain, which is why brain infections are very hard to treat. Most antibiotics can’t get into the brain, and those are small molecules. Apoaequorin is a huge molecule.
I can’t provide you a link to a study that specifically says apoaequorin can’t get into the brain, because nobody does that kind of research. It’s just not plausible it could happen. For the same reason, you won’t find anybody at NASA researching whether or not the Earth is hollow, despite this having been a popular theory years ago.
If a company makes an extraordinary claim for their product, it’s up to them to provide evidence that it is true. This would be easy to do. For example, you could feed apoaequorin to animals and use an antibody-linked tracer for apoaequorin to stain the tissues in which it was absorbed. This is the kind of study that should have been done before the product was ever marketed.
Binding to calcium in the brain is the mechanism of action claimed for Prevagen.
Quoting from:
prevagen.com/documents/memory-loss-symptoms-show-improvement-in-quality-of-life-studypdf.PDF (page has moved)
“The brain contains calcium-binding proteins that protect the brain cells and under normal functioning, many cellular processes are closely regulated. Calcium-binding proteins regulate calcium to keep a balance within the nervous system. As people age, an individual’s production of calcium-binding proteins is reduced. As the calcium-binding proteins decline, calcium is not as closely regulated, leaving brain cells vulnerable. Excess calcium can result in neuronal cell damage and memory impairment. ‘Fortunately, Prevagen provides a supplemental source of calcium-binding proteins to protect the cells, helping to restore calcium balance,’ explains Mark Underwood, President and co-founder of Quincy Bioscience.”
Quoting from:
prevagen.com/pharmacists/about.html (page has moved)
“The depletion of calcium-binding proteins in aging creates a scenario in which neurons are vulnerable to excitotoxicity brought on by excess calcium and can lead to cell death. This mechanism has been identified as a key mechanism in age-related cognitive decline.”
And if Prevagen actually did this, in what sense is it not an unapproved pharmaceutical drug?
I don’t know… It will be interesting to see what happens on all this.
Apoaequorin is not a “synthetically produced amino acid”. It’s a protein composed of 189 amino acids. I’m pretty sure it’s being made in a genetically modified organism (GMO). It would be possible to make it purely synthetically, but that would be incredibly expensive.
The gene for apoaequorin has been cloned and inserted into many organisms, and one of those must be the source of the apoaequorin used in Prevagen. In that sense, it is not really synthetic. It is the genuine apoaequorin gene being expressed in an organism easier to grow and harvest than jellyfish.
Since apoaequorin is a synthetically produced amino acid I suspected there may be a lot of research associated with it so I did a quick search of PubMed.gov to see what I could find. There were about 150 papers listed. Most of the research is being done in Europe. Only two studies related to memory, neither of those were human studies.
Simply put, apoaequorin affects how the body uses calcium, which is an important mineral for several systems in living organisms including plants, insects, and vertebrates.
Apoaequorin was purified around 1991 so has been well studied. The bulk of studies is not in memory research but in it’s effects on immunity, most specifically on inflamation.
When I included the word “human” in the search along with “apoaequorin”, the number of papers dropped to 31. Fortunately many papers are available in their full text, so I did a quick look-over of about a half dozen.
Most of the time the word “human” was used in the context of human derived chemical products implanted in other mammals. Human tissue samples from various organs were also tested to determine that the apoaequorin protein was not harmful and did seem to have a slight positive effect on the tissue.
Apoaequorin appears to be generally safe to human tissue – however no method of delivery to the body seems to have been tested, so whether the protein can survive the digestion system in therapeutic amounts doesn’t seem to be established by research found in PubMed.
The level of research still seems to be on the level of investigating how apoaequorin functions within an organism on a purely biochemical level, and most of that has been done in relation to the immunity system.
That some people have reported a negative bodily reaction to apoaequorin, is of little surprise to me, given the above safety statements. The human digestion is not very tolerant of amino acids that it has not experienced in low levels over a long time span. Fish oils, extracted from various oily fish need to be carefully purified to eliminate most of the other oil-soluble proteins found in fish. Cheaper brands of omega-3 fish oils contain higher percents of these mal-digestible proteins and can instigate a reaction from mild-burping of a foul-tasting fishy oil to a full blown allergic reaction.
Yes I was a little surprised by some of you side effects too the FDA mentioned too. I’m honestly not sure what to make of them.
Apoaequorin is a large protein (21.4 kDa) composed of 189 amino acids, so no significant amount could get absorbed intact from the gastrointestinal tract. And even if it did get into the bloodstream, a molecule that large could not cross the blood-brain barrier, so it would not get into the brain where memory occurs.
One apoaequorin molecule can bind three calcium ions. Given that apoaequorin weighs 21.4 kDa and calcium weighs 40 Da, I calculate that one 10 milligram tablet of apoaequorin could bind about 55 micrograms of calcium, if it were completely absorbed intact. The Recommended Dietary Allowance for calcium is 1,000,000 micrograms a day , so the putative mechanism of action for improving memory (binding calcium in the brain) is obviously preposterous.
Mark thanks for that information. I wasn’t aware of that information on the calcium binding properties. When I looked at the studies I noticed none of them appeared to look at calcium being bound to apoaequorin.
I wrote Prevagen to ask if it could tie up calcium meant for bones. I got a generic reply that it was safe but they did not answer my question.
Mark, Could you give me a link to support this? I’ve heard that apoaequorin doesn’t survive digestion or cross the blood brain barrier, but haven’t found any studies to support this.
I’ve been doing battle with this company. I wrote an unfavorable review and their legal team made me take it down. One of Quincy Bioscience’s scientists contacted me via Facebook to tell me he’d been fired for refusing to falsify data for investors, but within a few days his social media sites were all taken down. Very coincidental, don’t you think?
Supplement Clarity, beware! It’s only a matter of time before they come after you, too.
Deane, I hope not because I think I gave a fair and balanced review. I just emailed you privately.
As a 74 year old man that is still very active due to a solid structural bone framework, my concern would be that calcium binding would lead to osteoporosis. Since the promotion of this product is focused on the older population this would much more serious than any memory benefits.
Richard, I contacted the company about whether they had any studies or information on this and they brushed me off with a non-answer answer. But I agree that this is a genuine concern.