Some natural dihydrotestosterone blockers include saw palmetto, pygeum africanum, pumpkin seed oil and stinging nettles, according to About.com. Other supplements that help to support hair growth include niacin, biotin, zinc and vitamin B-12.
Saw palmetto is an effective, natural way to block dihydrotestosterone, states About.com. These berries come from a palm tree found in the southeastern United State and the West Indies, and they are available in pill form. The African cherry tree, or pygeum africanum, is a type of evergreen tree found in Africa, and people have used pygeum since the 1700s. Often, people get great results when combining pygeum and saw palmetto to block dihydrotestosterone. Since hair loss does not stop overnight, it is important to be consistent when using these remedies.
Pumpkin seed oil is another natural, effective dihydrotestosterone blocker, explains About.com. This oil contains delta-7 sterine, a steroid, which blocks the dihydrotestosterone buildup in each hair follicle. People take pumpkin seed oil orally or put it directly onto the scalp. Stinging nettles are not good when put on the skin, but when taken orally, can help to block dihydrotestosterone. The root of the stinging nettle contains the chemicals that block dihydrotestosterone, and people often take tinctures of the root with saw palmetto and pygeum for the most effective natural treatment for hair loss.