Performance supplements include vitamins, minerals, herbs, amino acids as well as extracts and metabolites that are said to improve athletic ability, muscle strength and endurance (ergogenic aids), augment muscle growth (muscle protein synthesis), boost anabolic hormones like testosterone or growth hormone (HGH), reduce pain and fatigue, raise nitric oxide levels, modulate lactic acid levels or enhance male and/or female sexual prowess. Supplements may come in powders, capsules, gel caps bars or liquids and may be sold as individual ingredients or as part of multi-ingredient dietary supplements.

Optygen: Does It Improve VO2 Exercise Endurance? Critical Review of Evidence
Update 6/3/20. Optygen is a stimulant-free endurance supplement that's touted to optimize aerobic exercise performance (Vo2max) in cyclists, marathon runners,... READ MORE
Cyvita Does It Work? Review Of Evidence
Longer, stronger, more frequent erections. These are the claims made for Cyvita, a male enhancement / erection supplement. To backup... READ MORE

Syntheroid Testosterone Booster Review: Does It Work?
Update 3/17/21. When I first heard the name Syntheroid I thought it was a supplement for the thyroid because its... READ MORE
Triverex Male Enhancement Supplement An Evidence Based Review
Triverex – the male enhancement supplement – is said to be “a revolutionary new formula with a key ingredient backed... READ MORE
Cytosport Whey Isolate Protein or Muscle Milk?
Cytosport, the company that makes Muscle Milk also makes a product that's simply called Whey Isolate. What's the difference? Well,... READ MORE

Tribulus Terrestris Does It work? My Experiment
Updated 10/15/23. Tribulus Terrestris first became popular in the 1990s but seemed to have fallen off a cliff until a... READ MORE