Six Star Testosterone Booster is from the makers of MuscleTech, America's #1 Selling Body Building Supplement Brand, so you know it's a powerful formula you can trust. Six Star Testosterone booster delivers a key ingredient shown in a human clinical study to amplify your body's natural testosterone production within the normal range. It even delivers a blend of ingredients shown to improve athletic performance.

• Maintain Peak Testosterone to Cortisol Ratio2



• Enhances Training Performance2

Six Star Testosterone Booster is manufactured according to cGMP standards, as is required for all dietary supplements.

1Six Star Testosterone Booster is formulated with a precise dose of the mineral boron, which is shown in human clinical research to increase active (free) testosterone in just 7 days.

2Six Star Testosterone Booster is also scientifically engineered with a unique, plant-based blend shown in a 7-week human clinical study to help maintain peak testosterone to cortisol ratio after an intense training regimen. Cortisol is a hormone released due to stress that can break down muscle tissue. Test subjects also enhanced performance as determined by a marker of training capacity.