California Gold Nutrition 5-HTP Sourced from Switzerland Supports Healthy Mood, Sleep & Appetite* Helps to Support Production of Serotonin* Suitable for Vegetarians Produced in a 3rd Party Audited cGMP Registered (Certified) Facility Formulated without Gluten, GMOs, and Soy 100% Gold Guarantee 5-HTP (5-Hydroxytryptophan) is extracted from the seeds of the Griffonia simplicifolia plant and is a precursor to the neurotransmitter serotonin. Research has shown that supplementing with 5-HTP may help to support a healthy mood as well as healthy sleep and appetite.* iTested Verified