Manufacturer of Vitamins, Healthy Foods, Natural Personal Care and Sports Nutrition Products
Nutrition for Optimal Wellness
Product image for SKU 0166

This product conforms to Good Manufacturing Practices (GMP)

L-Tryptophan 500 mg - 60 Veg Capsules


Supports Relaxation

Item#: 0166
Manufacturer SKU: 733739001665

  • Premium Grade
  • Encourages Positive Mood
  • Promotes Restful Sleep*


L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating sleep, positive mood and immune function.*  As an essential amino acid, it is not synthesized by the body and must be obtained from the diet.  Every lot of NOW® L-Tryptophan is tested to be free of Peak E and microbial contamination.


Suggested Usage

As a dietary supplement, take 1-2 capsules 2 to 3 times daily on an empty stomach or as directed by a health care professional.  Best used at bedtime.

Consider taking these other NOW® products:

Supplement Facts

Serving Size:2 Veg Capsules
Servings Per Container:30
Description Amount Per Serving % Daily Value*
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.

Vegetarian/Vegan Product.

Caution: For adults only. Consult physician if pregnant/nursing, taking medication (especially anti-depressant medications such as SSRI’s or MAOI’s), or have a medical condition. May cause drowsiness. Keep out of reach of children.

Warning:  Keep out of reach of children. Pregnant/lactating women, those taking anti-depressant medications (such as SSRI's or MAOI's), or those with liver disorders, consult a health care professional before using this product. May cause drowsiness.

Do Not Eat Freshness Packet. Keep in Bottle.

Store in a cool, dry place after opening.  Please Recycle.

*These statements have not been evaluated by the Food and Drug Administration.  This product is not intended to diagnose, treat, cure or prevent any disease.

This information current as of 5/24/13 5:14 PM.