An essential mineral tied to immune function and, in some research, testosterone support.
Zinc is an essential mineral involved in immune function, wound healing, and a range of other bodily processes, and it has research specifically tied to testosterone levels in men with zinc deficiency.
It's one of the more commonly included minerals in men's wellness formulas for this reason.
Zinc has a defined upper tolerable intake level, and taking too much over time can interfere with copper absorption — another reason an undisclosed dose is worth asking the seller about directly if you take other zinc-containing supplements.