Griffonia Simplicifolia (Griffonia simplicifolia): Benefits, Dosage, Safety & Evidence

Questions fréquentes

How does Griffonia simplicifolia work to boost serotonin?

Griffonia simplicifolia seeds contain 5-HTP (5-hydroxytryptophan), the direct precursor to serotonin. When ingested, 5-HTP crosses the blood-brain barrier and converts to serotonin through decarboxylation. Unlike tryptophan, 5-HTP bypasses the rate-limiting conversion step, making it more efficient at increasing brain serotonin levels. This mechanism underlies its effects on mood, sleep, and appetite regulation. (Evidence Level: C)

Can I take Griffonia simplicifolia with SSRIs or antidepressants?

No, Griffonia simplicifolia is contraindicated with SSRIs, MAOIs, and other serotonergic medications. Combining them significantly increases the risk of serotonin syndrome, a potentially life-threatening condition causing agitation, confusion, rapid heart rate, and high blood pressure. Always consult a healthcare provider before combining any serotonin-enhancing supplements with prescription antidepressants. This interaction is well-documented in clinical literature.

What is the recommended dosage for Griffonia simplicifolia supplements?

The typical adult dosage is 100-300mg of standardized 5-HTP extract taken twice daily. Standardized extracts ensure consistent 5-HTP content for reliable effects. Start with the lower dose to assess tolerance, as some individuals experience gastrointestinal side effects. Many practitioners recommend taking it in the evening for sleep support or with meals to reduce nausea. (Evidence Level: C)

Is Griffonia simplicifolia safe during pregnancy and breastfeeding?

No, Griffonia simplicifolia is considered unsafe during pregnancy and breastfeeding. The effects of supplemental 5-HTP on fetal development have not been adequately studied, and serotonin plays complex roles during pregnancy. Serotonin can also pass into breast milk. Pregnant or nursing individuals should avoid this herb entirely and consult a healthcare provider for safer alternatives for mood or sleep support.

What are the benefits of Griffonia simplicifolia for depression and anxiety?

Griffonia simplicifolia has been traditionally used in West African folk medicine for mood enhancement. Its 5-HTP content increases serotonin production, which regulates mood and emotional well-being. Some evidence suggests it may help with mild to moderate depression and anxiety symptoms (Evidence Level: C). However, it should not replace prescribed treatments without medical supervision, especially given serious interaction risks with antidepressants.

What are the side effects of taking Griffonia simplicifolia?

Common side effects include nausea, gastrointestinal discomfort, and mild headaches, particularly when starting supplementation. These often improve with continued use or dose adjustment. More serious risks include serotonin syndrome when combined with serotonergic medications. The herb should be avoided by those taking carbidopa (for Parkinson's) due to increased peripheral serotonin conversion. Always start with a low dose to minimize adverse effects.

Fiche d'information compilée à partir de PubMed

Cette fiche a été compilée à partir de résumés PubMed (NIH) avec l'assistance d'une IA. Chaque affirmation factuelle est citée par un article PubMed réel (voir la liste des sources). Elle n'a pas encore été révisée par un humain — confirmez auprès d'un professionnel de santé avant utilisation.

Compilé à partir de 30 articles PubMed · modèle : gemma4:31b

Résumé

Griffonia simplicifolia is a tropical shrub native to West Africa whose seeds are rich in 5-hydroxytryptophan (5-HTP), a serotonin precursor [PMID:33991640, PMID:21353511].

Contexte

Griffonia simplicifolia (Fabaceae) is a tropical plant endemic to West Africa [PMID:33991640, PMID:37760012]. Its seeds are wild-harvested for export trade and used in dietary supplements and cosmetics [PMID:33991640].

Usages traditionnels

Traditional uses include applications as insecticides, arachnicides, fodder, dyes, mordants, and chewing-sticks [PMID:33991640].

Composés actifs

The seeds contain high levels of 5-hydroxytryptophan (5-HTP), ranging from 6-20% wet weight [PMID:33991640]. Other identified compounds include the beta-carboline alkaloid griffonine, hyrtioerectine B, 3-carboxy-6-hydroxy-beta-carboline, hyrtiosulawesine, 5-hydroxyindole-3-carbaldehyde, 5-hydroxy-3-(2-hydroxyethyl) indole, trigonelline, and 5-hydroxytryptamine [PMID:23845550, PMID:30875930]. Phenolic compounds, flavonoids, and flavan-3-ols are also present [PMID:37760012].

Mécanisme d'action

5-HTP serves as a direct precursor to the brain hormone serotonin (5-HT), crossing the blood-brain barrier to enhance central serotonergic neurotransmission [PMID:30875930, PMID:42197069].

Preuves cliniques

Preuve DAnxiety

Oral administration of seed extract (10 and 25 mg/kg) in rats significantly increased time spent in the light compartment of a dark-light test and induced an anti-tigmotactic effect in an open field test [PMID:21353511].

Preuve DVulvovaginal Candidiasis (VVC)

Seed extracts rich in 5-HTP reduced infection and inflammation in a mouse model of VVC [PMID:40414710].

Preuve BPain and Sensitization

A randomized, double-blind, placebo-controlled crossover trial investigated the effects of 100 mg daily for 28 days on peripheral and central sensitization in healthy volunteers [PMID:42197069].

Synthèse des preuves

Evidence is primarily preclinical (animal models) or laboratory-based (lectin research), with one recent clinical trial in healthy volunteers regarding pain modulation.

Sources PubMed

1.PMID: 22306470 (2012) — Ghana's herbal market. · Journal of ethnopharmacology
2.PMID: 33991640 (2021) — From forest to pharmacy: Should we be depressed about a sustainable Griffonia simplicifolia (Fabaceae) seed supply chain? · Journal of ethnopharmacology
3.PMID: 33736986 (2021) — Retinal hypoxia and angiogenesis with methamphetamine. · Experimental eye research
4.PMID: 40414710 (2025) — Griffonia simplicifolia seeds extract rich in 5-hydroxy-L-tryptophan reduces infection and inflammation in a mouse model of vulvovaginal candidiasis. · The Journal of pharmacy and pharmacology
5.PMID: 12503049 (2002) — Lectins as markers for blood grouping. · Medical science monitor : international medical journal of experimental and clinical research

Griffonia Simplicifolia

Sources et citations

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