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SKU#: 0166

NOW Supplements, L-Tryptophan 500 mg, Encourages Positive Mood*, Supports Relaxation*, 60 Veg Capsules

By NOW Foods

$21.99

$12.29

In Stock


  • Encourages Positive Mood*
  • Promotes Restful Sleep*

L-Tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet.* L-Tryptophan is critical for the production of serotonin and melatonin, which help to support a positive mood, healthy sleep patterns, and proper immune system function.* Every lot of NOW® L-Tryptophan is tested to be free of Peak E and microbial contamination.

Natural color variation may occur in this product.

Source: Manufacturer
  • Encourages Positive Mood*
  • Promotes Restful Sleep*

L-Tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet.* L-Tryptophan is critical for the production of serotonin and melatonin, which help to support a positive mood, healthy sleep patterns, and proper immune system function.* Every lot of NOW® L-Tryptophan is tested to be free of Peak E and microbial contamination.

Natural color variation may occur in this product.

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Supplement Facts
Serving Size:2 Veg Capsules
Servings Per Container:30
DescriptionAmount per Serving% Daily Value
* Daily Value not established.
L-Tryptophan (Free-Form)1 g (1,000 mg)*

Other Ingredients:  Cellulose (capsule), Cellulose Powder and Stearic Acid (vegetable source).

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Caution: For adults only. Consult physician if pregnant/nursing, taking medication (especially antidepressants such as SSRIs and MAOIs), or have in a medical condition. May cause drowsiness. Do not use with alcoholic beverages or while operating heavy machinery. Keep out of reach of children.

Do not eat freshness packet. Keep in bottle.

Store in a cool, dry place after opening.

Please Recycle.

Vegetarian/Vegan

Family owned since 1968.