The most common natural Viagra alternatives you'll see online and in research are: arginine, ginseng, yohimbe, ginkgo biloba, and epimedium (horny goat weed).

Muse, Caverject, and Trimix can be good substitutes for Viagra (sildenafil). But they require insertion or injection into the penis. There’s some evidence that L-arginine might help with ED as an oral supplement. But it may not be safe for everyone. There’s not much evidence that trazodone, ginseng, or yohimbine help with ED.