Drugs and Lactation Database (LactMed) [Internet]. Bethesda (MD): National Library of Medicine (US); 2006-.
Chocolate contains small amounts of caffeine and larger amounts of the closely related compound, theobromine. It also contains anandamide and two related compounds that stimulate cannabinoid receptors, tryptophan, and polyphenols. All of these compounds are detectable in breastmilk in small amounts. Low intake of chocolate by a nursing mother is not problematic, but extreme amounts can affect the infant.