Semenax is said to be formulated with a proprietary blend of natural amino acids and herbal concentrates from Europe, China, and South America. Dr. Jessica Yih, a urologist at The Ohio State University Wexner Medical Center says that, while some ingredients are ones that have been studied, with some limited evidence to suggest effectiveness, the dosages may be too low to be effective. A 2018 study reported that zinc supplementation combined with weight training was helpful in boosting testosterone levels.

A 2015 studyTrusted Source showed that maca has fertility-enhancing properties in men.

However, both of these studies were small, and more research is needed.

Along with zinc and maca, here are some other Semenax ingredients:

a) Swedish pollen flower

b) L-arginine HCL

c) L-lysine

d) epimedium leaf(better known as “horny goat weed”)

e) L-carnitine

f) catuaba bark

g) pumpkin seed

h) vitamin E

i) pine bark extract

j) muira puama

k) hawthorn berry

l) cranberry

m) wild oat straws

n) arsaparilla