5-HTP is the precursor to serotonin, a neurotransmitter that has been linked to healthy moods and enhanced positivity. Supplemental 5-HTP helps to promote levels of seratonin in the nervous system which promotes a healthy mood and positive attitude. Nested Naturals HTP-5 supplement gives the body what it needs to produce more serotonin naturally. It doesn’t rewire brain circuitry like some prescription drugs do; it actually feeds the brain. Derived from a plant native to West and Central Africa, our 100mg 5 HTP proudly vegan, non-GMO, and free of: gluten, soy, milk, egg, fish, nuts, wheat, soybeans, corn, yeast, and barley and is non-habit forming.