The supplement industry sells “testosterone boosters” that mostly do nothing. Here is what the evidence actually shows.
Zinc repletion in deficient men. Vitamin D repletion in deficient men. Sleep (7+ hours raises T measurably). Resistance training. Fat loss in obese men.
Tribulus (multiple trials, no effect). D-Aspartic acid (no effect in trained men). Most herbal blends.
Maxorin includes Zinc at 11mg because deficiency is common and consequential. We do not claim testosterone elevation. If you suspect low T, get tested.