Back to catalog home


Thorne Research

90 capsules



Griffonia product image

Griffonia is a natural source of 5-Hydroxytryptophan (5-HTP), the intermediate metabolite produced when the body initiates the process of converting the essential amino acid L-tryptophan to serotonin. Serotonin levels in the body are associated with the regulation of sleep, mood, aggression, appetite, temperature, sexual behavior, and pain sensation.

Medicinal Ingredients:

L-5-Hydroxytryptophan (seed)
(Griffonia simplicifolia) 50 mg

Non-Medicinal Ingredients:

L-Leucine, Cellulose and Silicon dioxide in a hydroxypropyl methylcellulose capsule.

Recommended Dose:

Take with food. To promote healthy mood balance – 1-2 capsules, 3 times daily, or as recommended by a health-care practitioner. To minimize the risk of gastrointestinal side effects, start dosing at one capsule 3 times per day and slowly increase to effective dose over a period of 2 weeks. For use as a sleep aid: Take 2-4 capsules once daily or as recommended by a health-care practitioner. Take 30-45 minutes before bedtime.

Risk Information:

Consult a health-care practitioner prior to use if you are pregnant or breastfeeding. Consult a health-care practitioner if symptoms persist or worsen. Consult a health-care practitioner if sleeplessness persists continuously for more than 3 weeks (chronic insomnia). Consult a health-care practitioner prior to use if you are taking carbidopa or drugs/supplements with serotonergic activity. These may include, but are not limited to, L-tryptophan, S-adenosylmethionine (SAMe), St. John’s wort, antidepressants, pain killers, over-the-counter cough and cold medication containing dextromethorphan, antinausea medication and anti-migraine medication. Some people may experience diarrhea, nausea, vomiting and abdominal pain. Discontinue use and consult a health-care practitioner if you show signs of weakness, oral ulcers, or abdominal pain accompanied by severe muscle pain or if you experience skin changes. Do not use if you have scleroderma. Some people may experience drowsiness. Exercise caution if operating heavy machinery, driving a motor vehicle or are involved in activities requiring mental alertness.

Similar products
5‑HTP SAP 100 mg product image

5‑HTP SAP 100 mg

Nutritional Fundamentals for Health (NFH)

90 capsules



5-HTP 100mg product image

5-HTP 100mg


120 capsules



5-HTP Extra Strength product image

5-HTP Extra Strength




5-HTP CR product image



60 tablets