How to Increase Libido in Women and Men: Food, Supplements - Dr. Axe

Also high in tryptophan, protein-rich foods such as eggs, wild-caught fish, pasture-raised poultry and grass-fed beef/lamb, can help increase serotonin and boost your mood (and libido). Maca root, often referred to as "maca," is an adaptogenic herb.

Theobromine Benefits, Sources, Supplements and Side Effects - Dr. Axe

For thousands of years, cocoa beans — which are the source of real chocolate, as well as coffee — have been considered natural stimulants, relaxants, euphoriants, aphrodisiacs, tonics and antidepressants, in part because of a chemical found in these beans called theobromine.