The secret to a more satisfying sex life has long tortured men and women, and many have turned to natural supplements or over the counter products to kick their libido into gear. However, despite wide use, little is known about the safety or efficacy of natural libido boosters. Now, in a new study published in July in the journal of the International Society for Sexual Medicine researchers have reviewed the most popular and commonly used aphrodisiac products on the market and analyzed just how much evidence they have to support their use.

This data could be helpful to the 43% of women and 31% of men who report having at least one symptom of sexual dysfunction.

Here are eight of the products reviewed in the study. Check out what works and what doesn’t.

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