Griffonia 5-HTP 50 mg - Dietary food for diet management of depression - 98% 5-HTP from high-quality seed extract of African black bean - Purity externally tested by German laboratories - Quality Made in Germany What does 5-HTP have to do with serotonin? Serotonin, the \"happiness hormone\" has the ability to significantly influence mood, sleep and appetite. The substance used in the capsules is made from the African black bean, the Griffonia simplicifolia.