Description Science-Based Dietary Supplement Helps Maintain mental and Emotional Well-Being* 5-HTP (5-hydroxy L-tryptophan) is a naturally occurring metabolite of the amino acid tryptophan. 5-HTP is converted in the brain to serotonin, a neurotransmitter substance found at the junctions (synapses) between neurons. 5-HTP helps maintain mental and emotional well-being and promotes healthy sleep.* Doctors Best 5-HTP is extracted from the seeds of the Griffonia simplicofolia plant. Suggested Use As a dietary supplement, take 1 capsule two or three times daily, with or without food. Supplement Facts Supplement Facts Serving Size 1 Capsule Serving per container 60 servings Amount Per Serving %DV 5-hydroxy L-tryptophan 100 mg † † Daily Values Not Established. Other Ingredients Rice powder, magnesium stearate (vegetable source), gelatin capsule. Warnings Not to be used when taking MAO inhibitors, selective serotonin reuptake inhibitors (SSRIs), or other anti-depressant medications. It should also not be used by individuals taking any of the category of medications known as "triptans." Keep out of reach of children.