Rhino Horn

Don't even think about it! There are plenty of all-natural sex-drive enhancers available to you that don't involve killing or injuring a wild animal, especially ones that face extinction.

Rhino horn is mostly fibrous tissue with large amounts of calcium and phosphorus. The aphrodisiac properties of rhino horns can probably be attributed to two distinct causes: First, since low levels of calcium and phosphorus can lead to weakness and fatigue, taking large doses of these elements could increase stamina in men with calcium and/or phosphorus deficiencies.

The second reason is pretty straight-forward - a rhino's horn is a very potent and phallic symbol. It is hard, erect and comes from a powerful beast with skin like armor and testicles the size of baseballs.