Maca Root
The most-studied ingredient in the blend, with a 12-week clinical trial showing improved self-reported desire from week eight onward. Read more in our Maca Root deep dive.
Ashwagandha
An adaptogen with a 2021 systematic review naming it one of just two herbs with consistent evidence for supporting testosterone in men. See our Ashwagandha article.
Tribulus Terrestris & Horny Goat Weed
Traditional vitality herbs from Mediterranean and Chinese practice, with Horny Goat Weed valued for its icariin content. More detail in our Tribulus and Horny Goat Weed guide.
L-Arginine
An amino acid the body uses to make nitric oxide, the molecule that helps relax blood vessels and support circulation. Read the full writeup in our L-Arginine article.
Muira Puama & Catuaba
Amazonian bark tonics with a long history of use in Brazilian folk medicine for male vigor, far longer than any clinical trial.
Green Tea Extract & Caffeine
Green Tea Extract contributes catechins and a small share of the formula's declared 5mg caffeine content — about a twentieth of a cup of coffee.