Tryptophan, 480 Mg, 100 Capsules


In stock (can be backordered)

– Manufactured under Dr. Hulda Clark’s strict purity protocols

– No additives or flow agents

– 2 capsules per 960 mg. serving. Servings per container: 50

– Made in the USA

– Dietary Supplement / Food Supplement

Read more about Tryptophan

In stock (can be backordered)

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Tryptophan is an essential amino acid, which means that your body cannot manufacture it, so you need it every day either in food or in a supplement.

What is this Amino Acid Used For?

Tryptophan is used by the body for:

  • Growth and development
  • Producing niacin (Vitamin B3)
  • Aided by the niacin, creating serotonin

What is Serotonin Used For?

Serotonin is a calming substance for the body and plays a key role in healthy sleep and a stable mood. For this reason, it is often called a natural sedative.

How to Take It

Tryptophan works best on an empty stomach.

Information about the Manufacturer

Dr. Clark Research Association Purity Testing

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Additional information

Weight3.3 oz
Dimensions4.25 × 2.25 × 2.25 in
Directions / Suggested Use

Adults and children 12 years or more of age: 1 or 2 capsules daily or as directed.


Per 2-capsule serving: L-tryptophan 960 mg. Other ingredient: gelatin capsule.



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