# Griffonia simplicifolia **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/griffonia-simplicifolia **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-03-19 **Evidence Score:** 6 / 10 **Category:** African **Also Known As:** Griffonia simplicifolia, 5-HTP seed, African potato bean, Kanna bean, Bandeiraea simplicifolia, Ghanaian griffonia, West African bean pod ## Overview Griffonia simplicifolia is an African shrub containing 5-hydroxytryptophan (5-HTP), a direct precursor to [serotonin](/ingredients/condition/mood) that crosses the blood-brain barrier. The seeds provide standardized 5-HTP extract used primarily for mood support and sleep regulation. ## Health Benefits • Mood support through [serotonin](/ingredients/condition/mood) pathway modulation - based on open-label depression trial (evidence: preliminary human data) • Motion sickness reduction in pediatric patients - open-label trial (n=24) showed symptom improvement over 3 months (evidence: preliminary human data) • Antifungal and [anti-inflammatory](/ingredients/condition/inflammation) effects - preclinical mouse model showed reduced vulvovaginal candidiasis infection (evidence: animal study only) • Potential anti-cancer properties - in vitro studies showed antiproliferative activity against HeLa, HepG2, and MCF-7 cell lines (evidence: cell culture only) • [Antimicrobial](/ingredients/condition/immune-support) activity against Staphylococcus aureus - demonstrated in laboratory testing (evidence: in vitro only) ## Mechanism of Action Griffonia simplicifolia seeds contain 5-hydroxytryptophan (5-HTP), which crosses the blood-brain barrier and converts directly to [serotonin](/ingredients/condition/mood) via aromatic L-amino acid decarboxylase. Increased serotonin levels enhance neurotransmission at 5-HT receptors, particularly affecting mood regulation, sleep cycles, and appetite control. Unlike dietary tryptophan, 5-HTP bypasses the rate-limiting tryptophan hydroxylase enzyme step. ## Clinical Summary An open-label depression trial provided preliminary evidence for mood support through [serotonin](/ingredients/condition/mood) pathway modulation, though larger controlled studies are needed. A small open-label pediatric trial (n=24) showed motion sickness symptom improvement over 3 months of treatment. Most research focuses on isolated 5-HTP rather than whole Griffonia extract, with typical study dosages ranging from 50-300mg daily. The current evidence base consists primarily of preliminary human data and requires additional randomized controlled trials for definitive therapeutic claims. ## Nutritional Profile Griffonia simplicifolia is not consumed as a food ingredient for macronutrient or caloric value; its nutritional relevance is almost entirely defined by its seed bioactive alkaloid content. Primary bioactive compound: 5-hydroxytryptophan (5-HTP), present in seeds at approximately 6–14% of dry seed weight (some commercial extracts standardized to 98% 5-HTP). Secondary bioactive compounds include griffonilide (a furanone lactone), lectins (particularly Griffonia simplicifolia lectin I and II, GS-I and GS-II, which are N-acetylgalactosamine and galactose-binding), and trace amounts of related indole alkaloids. Protein content of whole seeds is estimated at 15–20% dry weight, though protein is not commercially exploited. Carbohydrate content includes complex polysaccharides and fiber components (~30–40% dry weight), with lectins being glycoprotein-bound. Fat content is low (<5% dry weight). Mineral content is not well characterized, but seeds contain modest levels of iron and magnesium typical of leguminous species. Bioavailability note: 5-HTP from Griffonia seed extract is well absorbed orally with ~70% bioavailability, readily crosses the blood-brain barrier without requiring a transport molecule (unlike L-tryptophan), and is rapidly converted to [serotonin](/ingredients/condition/mood) via aromatic L-amino acid decarboxylase. Lectins are largely denatured by heat processing and have limited systemic bioavailability when ingested. ## Dosage & Preparation Clinically studied dosages include 50 mg Griffonia simplicifolia extract (standardization unspecified) twice daily combined with 200 mg magnesium for pediatric motion sickness, and 60 mg extract standardized to 12.8 mg 5-HTP (~21%) twice daily for depression over 6 weeks. Consult a healthcare provider before starting any new supplement. ## Safety & Drug Interactions Common side effects include nausea, drowsiness, and gastrointestinal upset, particularly at higher doses above 300mg daily. Griffonia simplicifolia may interact with antidepressants (SSRIs, MAOIs) and serotonergic medications, potentially causing [serotonin](/ingredients/condition/mood) syndrome. Contraindicated during pregnancy and breastfeeding due to insufficient safety data. Individuals with scleroderma-like conditions should avoid use due to potential eosinophilia-myalgia syndrome risk associated with 5-HTP supplements. ## Scientific Research Human clinical evidence for Griffonia simplicifolia is limited to open-label trials without control groups, including a pediatric motion sickness study (n=24) and an unspecified depression trial using 12.8 mg 5-HTP doses. Preclinical research includes mouse models of vulvovaginal candidiasis (PMID: 40414710) and in vitro cancer cell line studies showing antiproliferative effects. ## Historical & Cultural Context Griffonia simplicifolia seeds have been used in West African traditional medicine, particularly in Ghanaian healing systems, for mental well-being. Modern supplement use for [serotonin](/ingredients/condition/mood) promotion derives from this traditional context, though specific historical duration and detailed traditional protocols are not documented in available sources. ## Synergistic Combinations Magnesium, Vitamin B6, L-theanine, Rhodiola rosea, Ashwagandha ## Frequently Asked Questions ### How much 5-HTP is in griffonia simplicifolia seeds? Griffonia simplicifolia seeds contain 3-7% 5-HTP by weight naturally. Standardized extracts typically provide 95-99% pure 5-HTP, with commercial supplements offering 50-200mg per capsule. ### Can griffonia simplicifolia be taken with antidepressants? No, griffonia simplicifolia should not be combined with SSRIs, SNRIs, or MAOIs due to increased serotonin syndrome risk. Consult a healthcare provider before combining with any psychiatric medications. ### How long does griffonia simplicifolia take to work for mood? Initial effects may appear within 1-2 weeks of consistent use, with full benefits typically developing over 4-6 weeks. The pediatric motion sickness study showed improvements over 3 months of treatment. ### What is the recommended dosage for griffonia simplicifolia extract? Clinical studies used 50-300mg daily of 5-HTP equivalent, typically divided into 2-3 doses with meals. Start with 50mg daily to assess tolerance before increasing dosage. ### Does griffonia simplicifolia help with sleep problems? Griffonia simplicifolia may support sleep through increased serotonin production, which converts to melatonin. However, specific sleep studies are limited, and evidence comes primarily from its serotonin-enhancing mechanism rather than direct sleep research. ### Is griffonia simplicifolia safe for children? Griffonia simplicifolia has been studied in pediatric populations for motion sickness reduction, with one open-label trial (n=24) showing symptom improvement over 3 months in children. However, safety data in children remains limited, and use should only occur under healthcare provider guidance. Long-term safety in pediatric populations has not been thoroughly established, so parental discretion and medical consultation are essential before supplementation. ### What does clinical research actually show about griffonia simplicifolia's effectiveness? Current evidence for griffonia simplicifolia is preliminary, consisting mainly of open-label trials rather than gold-standard randomized controlled studies. Mood support claims are based on preliminary human data showing potential serotonin pathway modulation, and motion sickness reduction was documented in a small pediatric trial (n=24), but larger, placebo-controlled studies are needed to establish efficacy. Antifungal and anti-inflammatory effects have only been demonstrated in preclinical mouse models, not yet confirmed in human trials. ### Can griffonia simplicifolia be used alongside other serotonergic supplements or herbs? Combining griffonia simplicifolia with other serotonin-modulating supplements (such as St. John's Wort, SAMe, or L-tryptophan) may increase the risk of excessive serotonin activity and should be avoided without medical supervision. Concurrent use with mood-supporting herbs requires careful consideration of cumulative serotonergic effects. Medical consultation is strongly recommended before combining griffonia simplicifolia with other supplements or botanical products affecting neurotransmitter levels. --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*