5-Hydroxytryptophan

The direct metabolic precursor to serotonin (5-hydroxytryptamine) in the kynurenine-bypassing serotonin biosynthetic pathway. Commercial 5-HTP is extracted from the seeds of Griffonia simplicifolia, a West African leguminous shrub whose seeds naturally accumulate the molecule at concentrations approaching 20 percent of seed weight.

White to off-white crystalline powder. Sensitive to light and oxidation; supplied with antioxidant protection and packaged under nitrogen. Water-soluble. The L-isomer (the bioactive natural form) is the regulated specification; the D-isomer is biologically inactive and is controlled as a process impurity.

We supply food-grade 5-Hydroxytryptophan from manufacturers in China holding ISO, Halal, Kosher and other certifications relevant to the product and production. The Griffonia simplicifolia seeds are sourced from authorised West African collectors and the active is extracted and purified in China to deliver the supplement-grade specification.

Common market grades include 98 percent and 99 percent purity from Griffonia simplicifolia (the volume-market standard), 30 percent and 50 percent Griffonia seed extract for whole-plant positioning, and time-release and enteric-coated downstream formats. Pharmaceutical-grade material with reduced peak X impurity profile is available for clinical applications.

Bulk and reduced-MOQ shipments. Batch-level COA covering assay, specific rotation (L-isomer confirmation), the peak X impurity profile (a specific known impurity historically associated with adverse events and now controlled to very low levels), residual solvents, heavy metals, and microbiology.

5-HTP was identified as the immediate precursor to serotonin by Massimo Sicuteri in 1965 and entered nutritional and clinical use through the 1970s and 1980s. The Griffonia simplicifolia seed source was identified by Ralph Heywood and colleagues in 1973 and became the dominant commercial supply route.

Industrial production is by aqueous-ethanol extraction of Griffonia simplicifolia seeds, followed by chromatographic purification and crystallisation. Alternative routes by fermentation using engineered E. coli expressing tryptophan hydroxylase exist but have not displaced the plant-extracted material in commercial supply, where the natural origin supports clean-label and regulatory positioning.

Recognised as a permitted supplement ingredient by the U.S. FDA under DSHEA. The peak X impurity, a contamination issue associated with the 1989 L-tryptophan eosinophilia-myalgia syndrome and identified in some 5-HTP material in the 1990s, is now controlled by modern manufacturing to undetectable levels. The current commercial material has a long established safety record. Approved as a supplement in Australia, Canada, and most major markets; restricted or scheduled in some EU member states.

The biological mechanism is direct conversion to serotonin by aromatic L-amino acid decarboxylase (AADC) in serotonergic neurons and in peripheral tissue including the gut. The molecule crosses the blood-brain barrier through neutral-amino-acid transport, in contrast to serotonin itself which does not cross. Plasma half-life is short, supporting either divided dosing or sustained-release finished-product systems.

The sleep-support application is the dominant retail position. 5-HTP delivers serotonergic effects without the regulatory and prescription-status barriers of pharmaceutical SSRI ingredients, while clinical evidence supports use at 50 to 300 mg per day for sleep, mood, and appetite-control indications.

• Sleep-quality and natural-sleep supplements; the leading retail application following decades of consumer use
• Mood-support and anti-stress formulations; supports serotonergic tone without the regulatory profile of SSRI ingredients
• Appetite-control and weight-management products
• Migraine-prevention supplements at standard doses
• Fibromyalgia and chronic-pain formulations
• Premium calm-focus and stress-reduction supplements
• Functional foods and wellness beverages with sleep-relaxation positioning
• Anti-anxiety supplements paired with L-theanine, magnesium, and B-vitamins
• Carbohydrate-craving support in low-carbohydrate dietary programmes