Bremelanotide (PT-141) - This compound has been shown to stimulate sexual arousal and desire in both men and women.

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Melanotan II - This compound has been reported to increase libido and sexual arousal, but it may also cause spontaneous erections.

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Oxytocin - Known as the "love hormone," oxytocin is a compound that can enhance feelings of closeness and attachment, which may lead to increased libido.