What are the main benefits of Griffonia simplicifolia extract (5-HTP)?

It is most often used to support mood, improve sleep quality, and help with appetite control. Effects are thought to relate to increased serotonin and downstream melatonin production.

What is a typical dosage range for Griffonia simplicifolia extract?

Common supplemental amounts are about 50–400 mg per day, depending on product standardization and individual tolerance. Start low and adjust as needed.

Who should avoid 5-HTP from Griffonia simplicifolia?

People taking serotonergic medications (such as SSRIs, SNRIs, MAOIs, or certain migraine medicines) should avoid it unless advised by a clinician due to serotonin-related risks. Pregnant or breastfeeding individuals should consult a healthcare professional before use.

What side effects can Griffonia simplicifolia extract cause?

Possible side effects include nausea, stomach upset, or drowsiness. If symptoms are persistent or severe, stop use and seek medical advice.

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Griffonia simplicifolia
Extract

Moderate study situation·7/10

A higher score indicates better study conditions, but not necessarily effectiveness.

Griffonia simplicifolia extract is a natural source of 5-HTP used for mood, sleep, and appetite regulation.

Sleep Improvement Depression / Mood Enhancement Weight Management

dose range

50–400 mg

1–3 doses per day

Consumption

Take orally, preferably with food to reduce gastrointestinal side effects. For sleep, take a dose 30–60 minutes before bedtime. For mood/appetite, doses can be taken throughout the day.

Not fat-soluble.

Best time

Starting at lower doses is recommended; dose may be increased gradually based on individual response. Avoid exceeding 400 mg daily without clinical guidance.

Description

Griffonia simplicifolia Extract is an African plant seed extract standardized to 5-HTP, a direct precursor to serotonin. It is commonly used in dietary supplements to support mood, promote sleep, and assist in appetite control by modulating serotonin pathways.

benefits

Main effects with level of evidence

Moderate

Note on evidence

There is moderate quality evidence supporting 5-HTP from Griffonia for mood and sleep, and preliminary evidence for appetite regulation, but studies are often small or short-term.

Supports Sleep Quality

Moderate

May improve sleep by enhancing serotonin and downstream melatonin levels, leading to reduced sleep latency and better sleep duration.

Particularly relevant for: Adults with sleep difficulty · Shift workers · Older adults

S2 · PubMed: 5-HTP and sleep quality

Mood Enhancement and Depression Relief

Moderate

Supplementation may help alleviate symptoms of low mood or mild depressive symptoms by increasing serotonin availability in the brain.

Particularly relevant for: Adults with mild depressive symptoms · Individuals experiencing low mood

S1 · PubMed: Antidepressant efficacy of 5-HTP S7 · Cochrane Review: 5-HTP for depression

Appetite Suppression and Weight Management

Limited

May reduce carbohydrate cravings and promote satiety, aiding in weight management for overweight individuals.

Particularly relevant for: Overweight adults seeking appetite control

S3 · PubMed: 5-HTP in obesity treatment

Safety & Information

Important safety information & known risks

For educational purposes only • not medical advice

Griffonia extract is generally well-tolerated at moderate doses, but excessive serotonin levels or misuse alongside serotonergic drugs can be hazardous.

warning notices

Possible side effects include nausea, diarrhea, drowsiness, and headache, usually dose-related.
Severe reactions (serotonin syndrome) are rare but can be life-threatening, especially if combined with serotonergic drugs.
Not recommended during pregnancy, breastfeeding, or in children; safety in these groups is not established.
Do not use with prescription antidepressants (SSRIs, MAOIs, tricyclics) due to risk of serotonin syndrome.
Avoid during pregnancy and breastfeeding due to insufficient safety data.
Discontinue use and seek medical attention if experiencing symptoms of serotonin excess (agitation, confusion, rapid heartbeat, sweating).

Known interactions with medications

SSRIs, MAOIs, tricyclic antidepressants, triptans, and other serotonergic medications.

Contraindications / special precautions

Concurrent use with serotonergic drugs
Pregnancy and lactation
History of serotonin syndrome

interactions

Important interactions between active ingredient ↔ supplement / medication / food

Griffonia extract (5-HTP) can interact dangerously with medications and substances affecting serotonin.

Do not combine with serotonergic antidepressants.

drug · Selective Serotonin Reuptake Inhibitors (SSRIs)

AvoidStrong

Why

Combined use greatly increases serotonin levels, raising the risk of serotonin syndrome.

recommendation

Avoid using Griffonia extract if you are taking SSRIs or other serotonergic medications.

S1 · PubMed: Antidepressant efficacy of 5-HTP S4 · WebMD: 5-HTP overview S5 · National Institutes of Health: 5-HTP Fact Sheet

Do not take with MAOIs.

drug · Monoamine Oxidase Inhibitors (MAOIs)

AvoidStrong

Why

Concomitant use may dangerously elevate serotonin and other neurotransmitters, risking serotonin syndrome or hypertensive crisis.

recommendation

Avoid use entirely if on MAOIs.

S4 · WebMD: 5-HTP overview S5 · National Institutes of Health: 5-HTP Fact Sheet

mechanisms of action

Brief explanations of how it works

Precursor to serotonin synthesis

5-HTP from Griffonia is converted into serotonin, which modulates mood, appetite, and sleep.

S1 · PubMed: Antidepressant efficacy of 5-HTP S5 · National Institutes of Health: 5-HTP Fact Sheet S6 · Examine.com: 5-HTP

Increased melatonin synthesis via serotonin pathway

Enhanced serotonin availability leads to increased production of melatonin, supporting sleep onset and quality.

S2 · PubMed: 5-HTP and sleep quality S6 · Examine.com: 5-HTP

Sources & References

Primary literature and reviews on which these statements are based

7 sources

PubMed: Antidepressant efficacy of 5-HTP

PubMed: 5-HTP and sleep quality

PubMed: 5-HTP in obesity treatment

WebMD: 5-HTP overview

National Institutes of Health: 5-HTP Fact Sheet

Examine.com: 5-HTP

Cochrane Review: 5-HTP for depression

Laatst bijgewerkt: 7 februari 2026

This information is for educational purposes only and does not replace medical advice.