
Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply
$0.53/serving
Price verified Apr 22, 2026
Not evaluated by the FDA · Individual results may vary · Consult a healthcare provider before use
Our verdict
See label of 5 htp per capsule from Jarrow Formulas. Best for 5 htp supplementation.
Why we recommend this
Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply provides 5 htp in a convenient form.
Check for interactions
Already taking other supplements or prescription medications? Add them below to check for documented interactions, severity, and clinical guidance.
Our database currently documents 137+ supplement and drug-category interaction pairs. Combinations not flagged here may still interact — always consult your healthcare provider before combining supplements, especially with prescription medications.
What to watch out for
Check label for specific dosage and ingredients.
Dose & form
- Serving
- See label
- Form
- Capsule
- Clinical range
- 100-300 mg daily
- Dose adequacy
- Blend
- Supply
- 30 servings · $0.53/serving
- UPC
- 790011150442
Who it's best for
5 htp supplementation
What customers say
4.5★ across 869 Amazon reviews. The most common questions from shoppers: re any potential interactions with medications, re any side effects from long-term use, and cause any digestive issues or side effects. Full answers in the FAQ below.
Frequently Asked Questions
What is the clinical dose for 5 htp?
What is the clinical dose for 5 htp?
Clinical trials typically use 100-300 mg daily. Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply delivers See label, which we classify as Blend relative to that range.
How does Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply compare to similar Capsule?
How does Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply compare to similar Capsule?
See the "Also consider" section below for two alternatives. Choose based on form preference (Capsule vs alternatives), dose adequacy, and third-party testing.
Is Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply third-party tested?
Is Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply third-party tested?
Third-party testing is not disclosed on the label. Contact Jarrow Formulas for a Certificate of Analysis.
Does this work with Amazon Subscribe & Save?
Does this work with Amazon Subscribe & Save?
Yes — Amazon Subscribe & Save is available for this product. Enrolling locks in a recurring delivery at a reduced per-unit price.
Are there any potential interactions with medications?
Are there any potential interactions with medications?
Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply contains 5 htp. As with any 5 htp supplement, consult your healthcare provider if you take prescription medications, especially blood thinners, blood pressure medications, or immunosuppressants. Jarrow Formulas recommends consulting a doctor before use if you are on medication.
Are there any side effects from long-term use?
Are there any side effects from long-term use?
At See label, Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply provides a moderate dose within the studied range of 100-300 mg daily, starting with 50-100 mg and titrating up. Long-term use at recommended doses is generally well-tolerated based on available research. Discontinue and consult a healthcare provider if you experience adverse effects.
Does it cause any digestive issues or side effects?
Does it cause any digestive issues or side effects?
5 htp capsules are generally well-tolerated. Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply is formulated as a capsule which is designed to be gentle on the stomach. Start with a lower dose if you have a sensitive stomach.
Is this product safe for pregnant or nursing women?
Is this product safe for pregnant or nursing women?
Jarrow Formulas does not specifically market Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply for pregnant or nursing women. If you are pregnant, nursing, or planning to become pregnant, consult your healthcare provider before taking any 5 htp supplement. Clinical safety data during pregnancy is limited for most 5 htp products.
Is it safe to take with other supplements?
Is it safe to take with other supplements?
Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply can generally be combined with other supplements, but be mindful of total 5 htp intake from all sources to stay within recommended daily limits (100-300 mg daily, starting with 50-100 mg and titrating up). Check with your healthcare provider if you're stacking multiple supplements.
What is the recommended dosage?
What is the recommended dosage?
The recommended dose is See label. Clinical studies on 5 htp typically use 100-300 mg daily, starting with 50-100 mg and titrating up. Jarrow Formulas® 5-HTP, 100 mg, Serotonin Precursor, 90 Veggie Capsules, 90 Day Supply provides a partial dose — consider your total daily intake. Follow the label directions or your healthcare provider's recommendation.
Also consider

Integrative Therapeutics 5-HTP - Supplement that Supports a Healthy Outlook & Restful Sleep* - Vegan, Dairy-Free & Gluten-Free - 60 Capsules (60 Servings)
Capsule · 5 htp · $24.00
$24.00

Sports Research® Sleep Complex- Melatonin-Free Vegan Capsules - with Valerian Root, GABA, L-Theanine, Magnesium & 5-HTP - 30 Servings
Capsule · 5 htp · $26.95
$26.95
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