Vitamin D3 (125mcg) - Vitamin D deficiency is the cause of many ailments including low testosterone. Most adults in the USA are deficient, so ensuring your levels are topped up is an important part of sorting your testosterone levels.
Vitamin B-3 (10mg) - Associated with improving brain function among other benefits, B3 is not directly linked to testosterone production but it’s a healthy vitamin nonetheless.
Calcium (45mg) - Some studies have indicated that calcium, in combination with training, can boost total testosterone and serum testosterone levels [1].
Zinc (15mg) - Zinc deficiency is another cause of low testosterone levels in many men. The 15mg dose found in Testo Booster should be enough to resolve most deficiencies and put your testosterone production back on track.
TestPlex Blend
D-Aspartic Acid (1000mg) - A common ingredient in t boosters, d-aspartic acid’s effect on testosterone production is well-documented. It is also thought to treat male infertility. This dose is reasonable, although a better dose would be around 2g.
Horny Goat Weed Extract (400mg) - Possibly an erectile aid and libido-enhancer, but its effect on testosterone production has only been researched on animals with mixed results. Even then, the dose here is low based on what studies would suggest is effective, which is around 900-1200mg for the average person (based on weight).
Tongkat Ali Leaf Extract (110mg) - Thought to release luteinizing hormone and increase levels of free testosterone. It may also improve sexual performance.
Stinging Nettle Root (60mg) - There is no evidence linking stinging nettle root to increased levels of testosterone.
Diindolymethane (50mg) - DMI may correct hormone imbalances that lead to too much oestrogen in men.
Fenugreek Seed Extract (50mg) - A good ingredient with a solid record for boosting testosterone. However, the dose here is on the low side.
Tribulus Terrestris Fruit Extract (50mg) - Despite ongoing claims to the contrary, tribulus terrestris does not boost testosterone. This has been extensively proven in many studies.
Performance Blend
Saw Palmetto Berries Extract (100mg) - The evidence supporting saw palmetto’s effects on hormones in the human body are very limited. Studies are done in test tubes and on rats. The effects are interesting but more evidence is needed to confirm the preliminary findings.
Asian Ginseng Root (100mg) - A solid ingredient and an effective testosterone booster. SNAP Testo Booster has got this one right.
Sarsaparilla Root (50mg) - This is a very dubious ingredient. It has been marketed as containing testosterone. These claims are completely fictitious. As far as we know, sarsaparilla root does nothing for your testosterone levels. A very poor choice of ingredient.
BioPerine Black Pepper Extract (5mg) - Black pepper is bioactivating, meaning it enhances the body’s ability to absorb and make use of all the other ingredients. It’s a solid choice for a testosterone booster.
Resources:
1. https://pubmed.ncbi.nlm.nih.gov/19099204/