Jarrow Formulas 5-HTP is a dietary supplement that delivers 5-Hydroxytryptophan and supports mood balance and healthy sleep by acting as a direct precursor to serotonin.

Benefits & Features:

• Helps mood balance by lifting serotonin levels.
• Supports restful sleep by aiding melatonin production for steadier circadian rhythms.
• The star ingredient comes from Griffonia simplicifolia seeds, and the formula is vegan, gluten-free, and non-GMO with purity confirmed by HPLC testing.
• Regular use on an empty stomach helps maximise absorption for mood and sleep benefits.
• Suitable for everyday wellness routines as part of a balanced lifestyle.

Jarrow Formulas has earned a reputation for science led, purity focused supplements. This 5-HTP is sourced from Griffonia simplicifolia seeds grown along the West African coast, with identity and strength verified by validated HPLC testing. The brand partners only with suppliers following cGMP, reflecting their commitment to transparency, potency, and reliable wellness support. In the broader Jarrow line you'll find probiotics and prenatal vitamins, reinforcing their role in comprehensive gut health supplements.

Microcrystalline cellulose, capsule (hydroxypropylmethylcellulose, water), magnesium stearate (vegetable source), silicon dioxide, 5-HTP (5-Hydroxytryptophan) (from Griffonia simplicifolia) (Seed).

• GTIN: 790011150442
• Manufacturer: Jarrow Formulas
• Size: 50 mg / 90 Capsules
• Categories: 5-HTP Supplements, Tablets & CapsulesBest SellersJarrow FormulasSleep & Relaxation SupplementsSubscribe & Save ProductsSupplements for Anxiety
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take one capsule of Jarrow Formulas 5-HTP (50 mg) daily on an empty stomach or as directed by your healthcare professional. Store in a cool, dry place, out of reach of small children. Consult a doctor before use if you are pregnant, nursing, under 18 years of age, or have a medical condition, especially if you are taking SSRIs, MAOs, or sedative medications. Discontinue use if any adverse effects occur.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: 5-HTP (5-Hydroxytryptophan)

5-HTP is a natural derivative involved in the production of serotonin, a key neurotransmitter that supports normal brain function. This form is sourced from Griffonia simplicifolia seeds and is suitable for vegan use.

The ingredient is provided in a plant-derived, purity-tested form to support dietary wellness and is commonly used as a direct precursor to serotonin and subsequent melatonin synthesis which helps regulate bodily rhythms.

What Does 5-HTP Do?

5-HTP is involved in the production of serotonin, contributing to normal mood regulation. It also assists with melatonin production, supporting the maintenance of regular circadian rhythms and sleep patterns.

This aligns with the role of serotonin and melatonin in healthy daily rhythms and general wellbeing, as described in standard nutritional guidance.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

Jarrow Formulas 5-HTP aligns with Welzo's rigorous partner criteria through a strong, science‑led heritage and a clear commitment to quality. The brand is recognised for its scientific rigour and its emphasis on quality, purity and potency, sourcing ingredients from suppliers who follow cGMP practices, which mirrors our own standards for manufacturing excellence. This credibility is reinforced by a well established industry standing and positive consumer recognition for science‑based formulations, making Jarrow Formulas a trusted choice for Welzo’s supplement portfolio.

Our team evaluated this partnership against Welzo’s vetting criteria, noting Jarrow Formulas’ transparent sourcing and validated quality approaches, including clear reference to validated testing processes and a dedication to purity and identity. This brand’s manufacturing philosophy focuses on safety, consistency and traceability, supported by a commitment to rigorous quality standards that we reflect in our processes. This product is a natural fit for a mood and wellness support category, where Jarrow Formulas’ scientific foundation and cGMP alignment provide reassurance to customers. This brand was evaluated by Welzo's healthcare professionals for compliance with our supplement quality standards.