Any substance that improves the sex drive, heightening a person’s sexual receptivity.

Common examples of aphrodisiacs include jojoba root, yohimbe, epimedium (colloquially known as “horny goat weed”), and testosterone, as well as more readily available substances such as chocolate and oysters. Most aphrodisiacs are only effective as placebos (the user believes that the substance will work, so it functions as expected).

However, some research indicates that yohimbe, phenylethylamine (a chemical present in chocolate), and other substances may act as legitimate aphrodisiacs. Additionally, ingredients like l-arginine may increase blood flow, which can stimulate the genitals and subsequently affect the user’s sex drive.

Some lubricants and sexual health products contain purported aphrodisiacs, including many of the substances listed above.