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500 mg, 90 vegetarian capsules.
Item# 01722

Your Price:
$24.75 Save 25%


Enjoy quality sleep & a pleasant mood

500 mg, 90 vegetarian capsules.
Item# 01722

Retail Price: $33.00

Your Price: $24.75 Save 25%

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  • L-Tryptophan
  • 500 mg, 90 vegetarian capsules.
  • Item Catalog Number: 01722

Serotonin is a neurotransmitter in the brain associated with positive moods and restful sleep.1-4 To produce and maintain optimum serotonin levels, your body requires tryptophan, an essential amino acid the body can’t produce.1

In the body, tryptophan has been shown to:

  • improve sleep3,4
  • enhance mood1,2,4
  • modulate stress5

The basis for this formula is premium L-tryptophan, which has undergone significantly more rigorous manufacturing processes than regular tryptophan material to assure the highest purity and safety.

  1. Int J Neurosci. 1992 Nov-Dec;67(1-4):127-44. 
  2. Curr Opin Neurobiol. 2013 Feb 2. pii: S0959-4388(13)00027-5. 
  3. Prog Neurobiol. 2000 Jan;60(1):13-35. 
  4. J Nutr. 2012 Dec;142(12):2236S-2244S. 
  5. J Exp Biol. 2002 Dec;205(Pt 23):3679-87. 


Supplement Facts

Serving Size 1 vegetarian capsule

Amount Per Serving


500 mg

Other ingredients: vegetable cellulose (capsule), microcrystalline cellulose, hydroxypropyl methylcellulose, stearic acid.


Dosage and Use
  • Take one (1) capsule 1 to 3 times daily on an empty stomach, or as recommended by a healthcare practitioner.
  • For maximum absorption, take with a small amount of carbohydrate, such as diluted juice.
  • Best if taken separately from protein and amino acids.

Consult your healthcare provider before taking this product if you are taking prescription medications (e.g. MAOI and SSRI antidepressants) for depression. Concomitant use of L-tryptophan with antidepressant medications has the potential to increase the risk of serotonin syndrome, characterized by symptoms like confusion, sweating, agitation, nausea, involuntary muscle contractions, and racing heartbeat. Do not use L-tryptophan before driving or operating heavy machinery.



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