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N NH₂ COOH HO ↓ Aromatic AAAD enzyme 5-HT 5-HTP 5-Hydroxytryptophan · C₁₁H₁₂N₂O₃ Direct Serotonin Precursor
Nutraceuticals
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Quick Specs
FormFree amino acid
Purity≥98% (HPLC)
SourceGriffonia simplicifolia
Shelf life24 months
MOQ1 kg (sample); 5 kg (commercial)
Nutraceuticals

5-HTP (5-Hydroxytryptophan)

Griffonia simplicifolia ≥98% Purity Serotonin Precursor Melatonin Pathway
The direct precursor to both serotonin and melatonin — the ingredient that supplies the brain's rate-limiting synthesis step for mood regulation, sleep, and appetite control.
5-HTP occupies a uniquely powerful position in the supplement market: it is the only ingredient that directly supplies the brain with serotonin-synthesis raw material while also feeding the melatonin pathway. It addresses three of the highest-demand supplement categories simultaneously — mood support, sleep quality, and appetite control — all through a single, well-documented mechanism that is far better established than most nootropic ingredients.

SV Botanica supplies pharmaceutical-grade 5-HTP at ≥98% purity from certified Griffonia simplicifolia seed extraction, with full impurity profiling on every COA — an important specification given that impurities in 5-HTP material (particularly Peak X, identified in the 1989 L-Tryptophan EMS incident) have historically been a regulatory concern. Our material passes stringent impurity testing and is manufactured under GMP controls.
Available specifications
    Quality Assurance

    Impurity-Profiled. Source-Verified.

    Every 5-HTP batch from SV Botanica includes full impurity profiling alongside standard purity testing — a critical specification for market registration and regulatory compliance in major supplement markets.

    01

    HPLC purity with impurity profile

    Every batch tested by HPLC for ≥98% 5-HTP content. COA includes impurity identification panel — essential for FDA, Health Canada, and EU regulatory submissions.

    02

    Griffonia source certification

    All material traceable to certified Griffonia simplicifolia seed sources. Botanical identity confirmed by TLC and HPLC fingerprinting. No synthetic or adulterated material supplied.

    03

    Heavy metals & pesticide panel

    Full heavy metals (lead, mercury, arsenic, cadmium) and pesticide residue testing to EU MRL standards. Microbial safety verified per USP standards before export.

    04

    Export documentation

    COA, MSDS, Certificate of Origin (botanical source confirmed), Phytosanitary Certificate, and GMP/ISO facility documents provided with every shipment.

    Mechanism of Action

    The Serotonin Synthesis Pathway: Where 5-HTP Fits

    Understanding 5-HTP's position in the serotonin synthesis pathway is the key to understanding why it outperforms L-Tryptophan as a supplement ingredient and why it can address mood, sleep, and appetite simultaneously through a single biochemical pathway. The pathway below shows each step from dietary intake to melatonin production — with 5-HTP's unique entry point highlighted.

    1
    Dietary Input
    L-Tryptophan
    Essential amino acid — must come from diet (turkey, eggs, dairy, nuts)
    L-Tryptophan competes with 5 other large neutral amino acids for blood-brain barrier transport via the LAT-1 carrier. Only a small fraction of ingested Tryptophan reaches the brain's serotonin synthesis pathway — the rest is diverted to the kynurenine pathway, used for protein synthesis, or converted to niacin. This competition and diversion makes L-Tryptophan an unreliable serotonin precursor.
    2
    Rate-Limiting Step → 5-HTP Entry Point
    5-HTP (5-Hydroxytryptophan)
    The rate-controlling intermediate — this step determines brain serotonin levels
    Enzyme: Tryptophan Hydroxylase (TPH) — converts Tryptophan → 5-HTP in the body
    Tryptophan Hydroxylase is the rate-limiting enzyme — it controls how quickly the pathway proceeds and is the step most sensitive to nutritional deficiencies and stress. Supplementing directly with 5-HTP bypasses this bottleneck entirely. 5-HTP crosses the blood-brain barrier via a different transport mechanism than L-Tryptophan, faces no competitor amino acids, and cannot be diverted to the kynurenine pathway.
    ★ This is where 5-HTP supplementation enters the pathway — bypassing the most variable and easily disrupted step in brain serotonin production.
    3
    Primary Target Neurotransmitter
    Serotonin (5-HT)
    Regulates mood, social behaviour, appetite, digestion, sleep, and memory
    Enzyme: AAAD (Aromatic L-amino acid decarboxylase) — converts 5-HTP → Serotonin; requires Vitamin B6
    Serotonin acts in both the central nervous system (brain) and enteric nervous system (gut — where ~95% of the body's serotonin is stored). Brain serotonin regulates mood, anxiety, appetite, and cognition. Elevated brain serotonin from 5-HTP supplementation is the mechanism behind its antidepressant, anxiolytic, and appetite-suppressing clinical effects. Vitamin B6 (pyridoxal-5-phosphate) is a required cofactor for AAAD — ensuring B6 sufficiency in 5-HTP formulations enhances conversion efficiency.
    4
    Sleep Regulation Output
    Melatonin
    Pineal gland hormone — regulates circadian rhythm and sleep onset
    Enzymes: AANAT then ASMT — convert Serotonin → N-Acetylserotonin → Melatonin (evening, in darkness)
    In the pineal gland, serotonin produced from 5-HTP is converted to melatonin in a two-step enzymatic process that is triggered by darkness and suppressed by light. Evening 5-HTP supplementation (30–60 minutes before sleep) provides the pineal gland with raw material for increased melatonin production, supporting natural sleep onset without the direct receptor stimulation of exogenous melatonin. This is why 5-HTP is particularly effective in sleep formulations targeting circadian disruption rather than pure sedation.
    5
    Formulation Intelligence
    Enhancing the Pathway
    Key co-factors and synergistic ingredients for formulators
    To maximise 5-HTP's clinical benefit, formulators should consider: Vitamin B6 (P5P form) — the cofactor for AAAD, required for 5-HTP-to-serotonin conversion; EGCG or green tea extract — may reduce peripheral 5-HTP conversion, preserving more for brain delivery; GABA — complementary anxiolytic and sleep-promoting mechanism for combination sleep formulas; Magnesium glycinate — supports AAAD enzyme activity and promotes muscle relaxation for sleep. Important safety note: 5-HTP must not be combined with SSRIs, MAOIs, or tramadol due to risk of serotonin syndrome.
    Buyer FAQ

    Frequently Asked Questions

    5-HTP (5-Hydroxytryptophan) is the intermediate metabolite between L-Tryptophan and serotonin (5-HT) in the brain's serotonin synthesis pathway. The body produces 5-HTP from L-Tryptophan via tryptophan hydroxylase (TPH), then converts 5-HTP to serotonin via aromatic L-amino acid decarboxylase (AAAD). Supplementing directly with 5-HTP bypasses the first (rate-limiting) step and provides the brain with immediate serotonin precursor material. Unlike L-Tryptophan, 5-HTP crosses the blood-brain barrier without competing with other large neutral amino acids — making it a significantly more reliable route to increased brain serotonin levels.
    Virtually all commercial 5-HTP is extracted from the seeds of Griffonia simplicifolia, a West African perennial shrub whose seeds naturally contain 5–10% 5-HTP by dry weight — one of the highest natural plant concentrations of any amino acid. This makes Griffonia seeds the only commercially viable botanical source for pharmaceutical-grade 5-HTP extraction. No synthetic route is used for supplement-grade 5-HTP — all material originates from Griffonia seeds, processed through aqueous extraction and chromatographic purification to yield 98%+ pure material.
    L-Tryptophan must compete with five other large neutral amino acids for transport across the blood-brain barrier via the LAT-1 transporter, and a significant portion is diverted to the kynurenine pathway. 5-HTP crosses the blood-brain barrier by a different transport mechanism, does not face the same competitive transport pressure, and cannot be diverted to the kynurenine pathway — making it a more efficient and predictable route to serotonin elevation per milligram supplemented.
    Yes — 5-HTP is frequently combined with complementary ingredients. For sleep: GABA (complementary mechanism), magnesium glycinate (muscle relaxation, GABA support), valerian root, or melatonin. For mood: L-Theanine (calm alertness), ashwagandha (HPA axis modulation), and B vitamins — particularly B6 (P5P form), which is the required cofactor for the AAAD enzyme that converts 5-HTP to serotonin. Important: 5-HTP must NOT be combined with pharmaceutical SSRIs, MAOIs, or other serotonergic medications without medical supervision due to the risk of serotonin syndrome.
    Clinical dosing varies by application. For mood support: 100–300mg per day in divided doses. For sleep quality: 100–200mg taken 30–60 minutes before bedtime, supporting serotonin-to-melatonin conversion. For appetite and weight management: 250–300mg three times daily before meals. Consumer supplement products most commonly deliver 50–200mg per serving. 5-HTP should be taken with food to minimise gastric discomfort. Including 10–25mg of Vitamin B6 (P5P) in the formulation is strongly recommended as a cofactor for optimal conversion.
    Every bulk 5-HTP shipment includes: Certificate of Analysis (COA) covering HPLC purity, impurity profile (including key related compounds), heavy metals panel, pesticide residue testing, moisture, and microbial safety; MSDS/SDS; Certificate of Origin confirming Griffonia simplicifolia botanical source; Phytosanitary Certificate; and GMP and ISO facility certification documents. The impurity profiling on our COA is particularly important for regulatory submissions in the USA, EU, and Canada. Halal and Kosher certificates available on request.
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