SlimQuick Review: Do the Ingredients Work for Weight Loss?

Originally published in 2013. Completely rewritten and updated in July 2026. SlimQuick has been sold as a weight-loss supplement for women for many years, but the name now covers several different formulas. The caplets, drink mixes, and keto pills contain different ingredients and caffeine amounts. The company also cites a green tea study that did not test a finished SlimQuick product. Here is what the current labels and research show.

What Is SlimQuick Pure?

SlimQuick Pure is a line of weight-loss supplements marketed mainly to women. The current company website lists caplets, keto pills, and several flavored drink mixes. It says the products should be used as part of a diet and exercise program.

Depending on the version, SlimQuick contains some combination of:

• Caffeine
• Green tea extract
• Medium-chain triglycerides, or MCTs
• Chaste tree extract
• Chromium
• Lady’s mantle
• Olive leaf
• Cumin
• Wild mint

The formulas are not interchangeable. Research involving one ingredient cannot automatically be used to prove that every SlimQuick product works.

SlimQuick Ingredients Compared

The following table is based on the supplement facts labels supplied for this review. Formulas can change, so compare these details with the label on the product you are considering.

The caplets provide 166.7 mg of caffeine per serving. The keto pills provide 250 mg.

The drink mixes list caffeine but do not reveal how much they contain. That is a meaningful omission for anyone who is sensitive to stimulants or trying to track total daily caffeine.

The proprietary blends also prevent consumers from knowing the amount of green tea, MCTs, chaste tree or most other ingredients.

Does SlimQuick Have a Clinical Study?

The SlimQuick weight-loss claim

The company website states that overweight women who used SlimQuick Pure’s “key ingredient” with a 1,350-calorie diet lost 25 pounds, compared with eight pounds in women who followed the diet alone. It also states that men using the ingredient with a 1,850-calorie diet lost 35 pounds, compared with 10 pounds from diet alone.

Those numbers come from a 2009 study of a green tea ingredient called GreenSelect Phytosome. The study did not test SlimQuick Pure caplets, keto pills or drink-mix packets.

What the SlimQuick ingredient study found

Researchers recruited 100 adults who were 20% to 40% above their ideal weight. The group included 44 women and 56 men between ages 25 and 60.

They were randomly divided into two groups:

• A reduced-calorie diet alone
• The same diet plus 150 mg of Monoselect Camellia twice per day

Monoselect Camellia contained GreenSelect Phytosome, a green tea extract combined with phospholipids. Men were assigned about 1,850 calories daily, while women were assigned about 1,350 calories.

After 90 days:

• The diet-only group lost an average of about 4.6 kg, or 10 pounds.
• The green-tea-plus-diet group lost an average of about 13.8 kg, or 30 pounds.
• BMI fell 5% in the diet group and 12% in the green tea group.
• Waist reduction for the full treatment group was not statistically significant.
• A significant waist reduction was reported only when the researchers analyzed the men separately.

While this sounds impressive, there are several reasons not to assume the same results will occur with SlimQuick.

Problems With the SlimQuick Study

1. The study did not test SlimQuick

This is the biggest problem.

The researchers tested Monoselect Camellia, a 150 mg tablet containing GreenSelect Phytosome. Participants took it twice daily.

They did not take the current SlimQuick formulas. The study tells us something about that specific green tea preparation when combined with a low-calorie diet. It does not prove that SlimQuick Pure produces the same effect.

2. Some SlimQuick versions do not contain the studied ingredient

The current Supplement Facts label for the caplets does not list green tea at all. It contains caffeine, the SQ11X herbal blend, MCT powder and chaste tree. A study of GreenSelect Phytosome is not proof for a SlimQuick formula that contains no green tea.

The keto pills and drink mixes contain a green tea ingredient, but their Supplement Facts labels use terms such as KetoGreen or Phytosome Green Tea. It is unclear if these names refer to GreenSelect Phytosome.

3. There was no placebo

The control group followed the low-calorie diet but did not receive a placebo pill.

This means the people knew they were taking the weight-loss supplement. The researchers acknowledged that people given a treatment might have followed the diet more carefully. They reported that 90% completed food records and claimed adherence was similar, but self-reported diet records are not the same as a blinded placebo-controlled design.

Adding a placebo would have helped separate the ingredient’s effect from motivation and expectations of weight loss.

4. The reported weight loss was unusually large

The green tea group lost approximately 30 pounds in 13 weeks, which is about 20 pounds more than the diet-only group.

That is much larger than the average effect reported in the broader green tea literature.

A 2020 meta-analysis of randomized controlled trials found that green tea supplements reduced body weight by an average of 1.78 kg, or about 4 pounds. That's much less than the weight loss reported in the GreenSelect Phytosome study used to support the benefits of SlimQuick.

Does Green Tea in SlimQuick Help With Weight Loss?

Green tea contains caffeine and compounds called catechins. The catechin most often studied is epigallocatechin gallate, better known as EGCG.

Research suggests that green tea with caffeine may slightly increase energy use and fat oxidation. However, these effects do not usually translate into dramatic weight loss.

A meta-analysis published in 2024 examined randomized trials involving women with overweight or obesity. Green tea supplementation reduced body weight by an average of 1.23 kg, or about 2.7 pounds. Greater weight reductions appeared in studies lasting at least eight weeks and using at least 1,000 mg of green tea per day.

However, SlimQuick does not disclose its green tea dose, so it is impossible to know whether its formulas provide an amount comparable to these trials.

A review published by the NIH concluded that green tea extract may have only a modest effect on weight.

Can we compare the SlimQuick dose with the studies?

Not very well.

The drink and keto-pill labels state that the green tea extract contains 19% catechins and 13% EGCG, but they do not reveal how many milligrams of green tea are present.

The entire proprietary blends have:

• 385 mg in the drink mix
• 470 mg in the keto pills

Those numbers include caffeine, MCTs, chaste tree, and other ingredients. The actual amounts of green tea and EGCG are unknown.

Does Caffeine in SlimQuick Burn Fat?

Caffeine can temporarily increase alertness, energy expenditure and fat oxidation. It may also reduce appetite in some people.

That does not mean it produces meaningful long-term weight loss. The body develops tolerance to caffeine, which can weaken its stimulant and metabolism effects over time.

The caffeine amounts disclosed on the labels are:

• SlimQuick caplets: 166.7 mg per serving
• SlimQuick keto pills: 250 mg per serving

For comparison, an eight-ounce cup of coffee generally contains about 85 to 100 mg.

Do MCTs in SlimQuick Help With Weight Loss?

Some human research suggests that replacing long-chain dietary fats with MCT oil may produce a small reduction in body weight. In one 16-week trial, overweight adults consumed 18 to 24 grams of MCT oil or olive oil daily as part of a calorie-restricted weight-loss program. The MCT group lost more weight and body fat. However, MCT oil replaced another dietary fat and was combined with weekly weight-loss counseling.

Human studies that I located have generally used about 5 to 24 grams of MCTs per day. SlimQuick appears to provide less than that. Its entire proprietary blend weighs only 385 to 470 mg and includes several ingredients besides MCT powder. The label also says the powder is only 50% MCTs. Even if the whole 470 mg blend were MCT powder, which it is not, it would supply no more than 235 mg of MCTs.

Does Chromium in SlimQuick Keto Pills Help?

The keto pills provide 200 micrograms of chromium per serving.

Chromium is often promoted for blood sugar control, appetite reduction and fat loss, but weight-loss results have generally been small and inconsistent. Chromium is not present in all SlimQuick products.

Does Chaste Tree Help With Weight Loss?

Chaste tree, also called chasteberry or Vitex agnus-castus, is better known for its possible effects on premenstrual symptoms. I found no convincing human evidence that it causes weight loss.

SlimQuick does not disclose how much chaste tree its proprietary blends contain.

What About the SlimQuick SQ11X Herbal Blend?

The SlimQuick caplets contain a blend called SQ11X made from:

• Lady’s mantle leaf
• Olive leaf
• Cumin seed
• Wild mint leaf

SlimQuick does not disclose the amount of each herb. The complete 402 mg complex must also accommodate caffeine, MCT powder and chaste tree.

That appears to leave little room for large doses of the four SQ11X herbs.

Individual studies may exist on some of these plants, but research on an isolated herb does not prove that this combination causes weight loss. I found no published human clinical trial showing that the current SQ11X SlimQuick caplet formula produces meaningful weight loss.

This formula also lacks the green tea ingredient used in the study promoted on the SlimQuick website.

Is SlimQuick Designed for Women?

SlimQuick says its products address “weight loss designed for women.”  However, the company’s main study: 56 of the 100 participants were men. Women and men can differ in hormones, body-fat distribution and other factors that affect body weight. However, the study did not establish that SlimQuick works better for women or overcomes specific female barriers to weight loss.

SlimQuick Side Effects

Possible SlimQuick side effects depend on the version, dose, caffeine intake and individual sensitivity.

Caffeine side effects

The most likely problems include:

• Trouble sleeping
• Nervousness
• Shakiness
• Headache
• Nausea
• Rapid heartbeat
• Increased blood pressure
• Anxiety
• Frequent urination

Caffeine’s average half-life is about 6 hours, so taking SlimQuick later in the day may disrupt your sleep at night.  The keto pills contain 250 mg per serving. That is a lot.

Green tea extract side effects

Green tea extract may cause:

• Nausea
• Constipation
• Stomach discomfort
• Increased blood pressure

Rare cases of liver injury have also been reported with concentrated green tea extracts, particularly in tablets and capsules.

Have SlimQuick Products Been Linked to Liver Damage?

Rare cases of serious liver injury have been reported in people who were taking SlimQuick products.

The National Institutes of Health LiverTox database states that at least two dozen cases attributed to SlimQuick products have been described in published reports. Symptoms generally appeared within 3 to 12 weeks of starting the supplement. Most people recovered after stopping it, but at least one patient developed acute liver failure and required a liver transplant.

These reports involved older SlimQuick formulas, not necessarily the exact products sold today. SlimQuick has changed its ingredients over the years, and the reported cases involved multi-ingredient supplements whose individual ingredient doses were often unknown.

Green tea extract is considered the most likely cause in many of the reported cases. However, it is not possible to prove that green tea caused every case because the products contained several ingredients. Since the published reports involved older formulas, it is also not known whether the same risk applies to SlimQuick products sold today. The concern is most relevant to current versions that contain concentrated green tea extract.

Who Should Avoid SlimQuick?

Ask a healthcare provider before using SlimQuick if you:

• Are pregnant or breastfeeding
• Have heart disease or an abnormal heart rhythm
• Have uncontrolled high blood pressure
• Have liver disease
• Have an anxiety or panic disorder
• Have severe insomnia
• Have a hormone-sensitive condition
• Take prescription medications
• Use other caffeine or stimulant supplements
• Are younger than 18

Is SlimQuick Keto Friendly?

The labels describe several products as keto-friendly, but SlimQuick is not a ketone supplement and does not put the body into ketosis by itself.

The drink mixes contain two or three grams of carbohydrate per packet. That amount may fit into many low-carbohydrate lifestyles, but taking SlimQuick does not replace the need to control total carbohydrate intake.

The keto pills contain MCT powder, but the amount is unknown. The word “keto” should not be mistaken for evidence that the pills increase ketone levels.

SlimQuick Pros and Cons

Possible advantages

• Caffeine may temporarily increase energy and alertness.
• Green tea and caffeine may have a small weight-loss effect.
• Drink packets are convenient.
• Caffeine amounts are disclosed on the caplets and keto pills.

Important drawbacks

• • The current SlimQuick supplement formulas have not been shown to cause substantial weight loss in published clinical trials.
  • The company study tested a different green tea product.
  • Most ingredient amounts are hidden in proprietary blends.
  • Drink-mix labels do not disclose the caffeine dose.
  • The keto pills contain 250 mg of caffeine per serving.
  • Chaste tree is not a proven weight-loss ingredient.
  • Concentrated green tea extracts have been linked to rare liver injury.

Does SlimQuick Really Work? My Verdict

SlimQuick may provide energy, and some versions may reduce appetite. Products containing green tea and caffeine might also contribute to a small amount of weight loss.

But the evidence does not show that current SlimQuick products cause the dramatic losses promoted by the clinical trial.

The cited study tested GreenSelect Phytosome with a strict low-calorie diet. It did not test SlimQuick by itself.

The clearest effect many users will notice is probably stimulation from caffeine. Whether that is helpful depends on the person.

Without eating fewer calories, I would not expect SlimQuick by itself to produce major or lasting weight loss.

Frequently Asked Questions About SlimQuick

How much caffeine is in SlimQuick?

It depends on the supplement you take. SlimQuick Pure Extra Strength caplets have 166.7 mg per serving while the keto pills have 250 mg.  The drink mixes list caffeine but do not list how much.

Does SlimQuick suppress appetite?

Caffeine may temporarily reduce appetite in some people. However, the Supplement Facts labels do not provide convincing evidence that the other ingredients produce significant appetite-suppressing effects.

Can SlimQuick make you jittery?

It's possible. Nervousness, shaking, anxiety and a rapid heartbeat are possible, especially with the 250 mg keto-pill serving or if SlimQuick were to be combined with coffee, tea, energy drinks or pre-workout supplements. Your sensitivity to caffeine can influence this.

Can you take SlimQuick at night?

SlimQuick may interfere with sleep because it contains caffeine. People who are sensitive to stimulants should avoid taking it late in the day. The company’s directions and the individual product label should also be followed.

Does SlimQuick burn belly fat?

No supplement selectively burns abdominal fat. Weight loss can reduce waist size, but SlimQuick has not been shown to target belly fat.

Is SlimQuick safe for women over 50?

Age alone does not determine safety. Women with heart conditions, high blood pressure, liver disease, medication use or other health issues should speak with a healthcare professional before using it.

Can men use SlimQuick?

The company’s cited green tea study included more men than women. That said, this doesn't prove the SlimQuick formulas work for either men or women.

Is SlimQuick FDA approved?

No. Dietary supplements are not FDA-approved for effectiveness or effectiveness before they are sold. The FDA does regulate supplements but generally does not approve of them before they are sold to the public.