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Source Naturals, 5-HTP, 100 mg, 120 Capsules

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In Stock
  • Expiration Date: Nov 2019
  • Shipping Weight: 0.18 lbs (0.08 kg)
  • Product Code: SNS-01696
  • UPC Code: 021078016960
  • Package Quantity: 120 Capsules
  • Dimensions: 2.2 x 2.2 x 3.8 in, 0.15 lbs (0.07 kg)
  • Due to Japanese Custom’s regulations, a maximum of one bottle per order can be imported.

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Product Overview


  • Dietary Supplement
  • L-5-Hydroxytryptophan
  • Supports Normal Sleep Cycles

5-HTP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid, tryptophan, to serotonin. Clinical studies have shown that 5-HTP increases the amount and availability of serotonin produced by the body. Increased brain serotonin levels may produce positive effects on emotional well-being, appetite regulation, melatonin production and maintaining a healthy sleep cycle. Source Naturals 5-HTP is naturally derived from the seeds of the African plant Griffonia simplicifolia.

Suggested Use

1 capsule once or twice daily with a glass of water. Start with 1 capsule per day, increasing dosage up to 2 capsules daily as needed. Do not exceed the recommended dose.

Other Ingredients

Microcrystalline cellulose, gelatin (capsule), colloidal silicon dioxide, and magnesium stearate.

Hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.


In some people, nausea, headaches, nasal congestion, or constipation may occur. If these symptoms occur, lower the dose, or spread the dose throughout the day. Discontinue use if any of these symptoms persist for more than three days. If you are pregnant, may become pregnant, or breastfeeding, taking prescription medication such as antidepressant SSRI's, MAO inhibitors or sedatives, or if you have heart disease, consult your physician before using this product.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

Supplement Facts
Serving Size: 1 Capsule
  Amount Per Serving %DV
5-HTP (from Griffonia simplicifolia) 100 mg
†Daily Value not established.
iHerb Customer Reviews


Posted by 5704744126242538506 on Dec 12, 2015

until now without any positiv effects!

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Headaches no more

Posted by Reviewer2097871 on Oct 18, 2014

Used to suffer from debilitating headaches. Since using this, have really noticed a difference in frequency and severity

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Posted by Reviewer1284478 on Aug 17, 2013

The brand I choose first.

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Posted by Reviewer1352709 on Jul 14, 2010

I keep reordering this one. I take 2 in the am and pm. It seems to help me facing everything that comes along with living everyday life.

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Posted by Reviewer1769943 on May 04, 2010

Great quality

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