1. Mondia whitei
Also known as White’s Ginger, Mondia whitei is found across sub-Saharan Africa. It is used in quite a few ways, usually to aid digestion or appetite, but the roots are used as a cure for impotence. The evidence it might be useful comes from rats. This isn’t a research project due to sympathy for lovelorn rats. Rats are often used as subjects for tests on what become human medicines as biologically we’re quite similar.
In the 1960s and 70s a staple of low-budget British comedy films was the potion that would invigorate even the most stubborn libido. What if it existed? Research says that it does. It’s nutmeg. Before you leap for joy when you read what a versatile spice nutmeg is, there is a catch. The experiments were all done on rats.
3. Tribulus Terrestris
If you didn’t know that rats are used as a proxy for humans you could conclude that scientists have a worrying thing about rats. You can pick up Evaluation of the aphrodisiac activity of Tribulus terrestris Linn. in sexually sluggish male albino rats, if you’re worried about your rat (not a euphemism). It looks at treatments with extracts from Tribulus terrestris, sometimes called Land caltrops.
People could have been using Ginseng to improve sex since 3500 BC in China. Once again it’s the doctrine of signatures to the rescue. However, there might be some science that correlates with this. The power of ginseng comes from Ginsenosides.
5. Horny Goat Weed
The effect of the plant was said to have been discovered by a Chinese goat herd who spotted the effect while out tending his flock. Experiments have shown it’s effective in aged rats. It’s been sold in the UK by Gillian McKeith. Given her track record you might want to hold off using it till there are more reliable studies on its effect on humans.