HypeCheck
← All Ingredients Cognitive

Last verified: today

Griffonia Seed

Also known as: Griffonia simplicifolia, 5-HTP, 5-Hydroxytryptophan, African black bean seed

Evidence under review. — Not yet rated

Seed extract rich in 5-HTP, a serotonin precursor. May support mood, sleep, and appetite — but evidence is limited.

  • What it does

    Griffonia simplicifolia is a West African plant whose seeds are naturally rich in 5-hydroxytryptophan (5-HTP), a direct precursor to serotonin in the brain. Because serotonin influences mood,...

  • Evidence quality

    Evidence base hasn't been formally rated yet. See research below.

  • Clinical dose

    50-400 mg/day (as 5-HTP extract); No established dose from provided studies

See full breakdown ↓ Methodology →

What the Science Says

Griffonia simplicifolia is a West African plant whose seeds are naturally rich in 5-hydroxytryptophan (5-HTP), a direct precursor to serotonin in the brain. Because serotonin influences mood, sleep, and appetite regulation, 5-HTP from Griffonia seeds is commonly used to support emotional well-being, improve sleep quality, and reduce food cravings. Most available research is on isolated 5-HTP rather than the whole seed extract, and study quality is generally limited — so claims should be interpreted cautiously.

What It Doesn't Do

Not a proven antidepressant — don't replace prescribed medications with it. Won't instantly fix insomnia. No solid evidence it causes significant weight loss on its own. Not a substitute for therapy or lifestyle changes for mood disorders. The osteosarcoma research provided has no relevance to typical supplement use.

Evidence-Based Benefits

May help support serotonin levels, which play a role in mood regulation.

Weak Evidence

Effective at: 100-300 mg/day

May improve sleep onset and quality by boosting serotonin and melatonin production.

Weak Evidence

Effective at: 100-200 mg before bed

May reduce appetite and calorie intake by increasing feelings of fullness via serotonin.

Weak Evidence

Effective at: 200-300 mg/day

Absorption & Bioavailability

Good — 5-HTP crosses the blood-brain barrier efficiently and is well absorbed orally, especially without food. However, bioavailability data specific to Griffonia seed extract (vs. pure 5-HTP) is limited.

Red Flags to Watch For

  • Do NOT combine with antidepressants (SSRIs, MAOIs, SNRIs) — risk of serotonin syndrome, which can be life-threatening
  • Long-term safety is poorly studied; continuous use beyond a few months is not well-supported by research
  • Products vary widely in actual 5-HTP content — standardization is inconsistent across brands
  • May cause nausea, diarrhea, or stomach cramps, especially at higher doses or on an empty stomach
  • No regulatory approval for treating any medical condition — marketing claims often far exceed the evidence

Frequently Asked Questions

What does Griffonia Seed do?

Seed extract rich in 5-HTP, a serotonin precursor. May support mood, sleep, and appetite — but evidence is limited.

What is the effective dose of Griffonia Seed?

50-400 mg/day (as 5-HTP extract); No established dose from provided studies

Is Griffonia Seed safe?

Do NOT combine with antidepressants (SSRIs, MAOIs, SNRIs) — risk of serotonin syndrome, which can be life-threatening

What doesn't Griffonia Seed do?

Not a proven antidepressant — don't replace prescribed medications with it.

Research Sources

  • General knowledge — Limited published research available. No relevant clinical trial abstracts were provided for this ingredient.

This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-05-30