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Jarrow Formulas, L-Tryptophan Peptide, 60 Tablets

By Jarrow Formulas

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  • Product Code: JRW-15067
  • UPC Code: 790011150671
  • Package Quantity: 60 Tablets
  • Dimensions: 2.1 x 2.1 x 3.8 in, 0.2 lbs (0.09 kg)
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Product Overview

  • Supports Relaxation, Positive Mood & Sleep
  • Dietary Supplement
  • TRP PepForm - Tryptophan Peptides
  • Vegetarian
  • Suitable for Vegetarians

Jarrow Formulas L-Tryptophan Peptide uses PepForm technology.

L-tryptophan is an essential amino acid and must be obtained from food or supplements. L-tryptophan is metabolized to serotonin (5-hydroxytryptamine) and melatonin, which is important for relaxation, restful sleep and positive mood.

Suggested Use

Usage: Take 2 tablets on an empty stomach 30 minutes before sleep with water or fruit juice or as directed by your qualified healthcare professional.

Other Ingredients

Calcium phosphate, cellulose, stearic acid (vegetable source), magnesium stearate (vegetable source) and a food grade coating.

Contains: Dairy

No wheat, no gluten, no soybeans, no egg, no fish/shellfish, no peanuts/tree nuts.


Do not take this product if you are on any medications, especially, antidepressants, or if you are pregnant or breastfeeding, consult your qualified healthcare professional. Do not take this product if you are taking any SSRIs (selective serotonin reuptake inhibitors).

Keep out of the reach of children.

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Supplement Facts
Serving Size: 2 Tablets
Serving Per Container: 30
  Amount Per Serving % DV
L-Tryptophan Peptides (PepForm) 1350 mg *
L-Tryptophan (from L-Tryptophan Peptides [PepForm]) 500 mg *
* Daily Value not established.

iHerb Customer Reviews

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Peptide form

Posted by Horatio on Oct 25, 2014

Peptides are isolated from whey proteins to deliver amino acids in a soluble and more bioavailable form. As such the amino acids can be directly absorbed and moved into the bloodstream. Tryptophan is the pre-cursor to serotonin, melatonin and niacin. In order to use tryptophan the body also needs sufficient supplies of vitamin B6. It might be sensible when taking tryptophan over the long-term to regularly add some B6. Tryptophan is most affective taken along side some carbohydrate (fruit or orange juice), this is because carbohydrates cause the body to release insulin which in turn helps to utilise tryptophan more easily. Personally when using this product I would say the effect from tryptophan is longer lasting. If I take normal pure l-tryptophan, the effect seems to last two hours after which I might feel worse; and I'm not planning on taking a capsule every two hours. If I take two tables of this at noon for example (500mg tryptophan in total), I feel good for the rest of the day; and even better in the evening. So my personal observation is indeed that this form is better utilized by the body!

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13 people found the following review helpful

Helps me to sleep

Posted by Reviewer2509092 on Jan 12, 2015

In Finland we have this thing called "night of the lizards"(hang-over induced nightmares). This product really takes it all away. Also been an exellent mood enhancer for me.

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6 people found the following review helpful

Great Product - sold with only one month left to expire.

Posted by 5196421881682815628 on Mar 23, 2015

The Tryptophan worked as expected. Great sleep aid, if needed. My only problem was iHerb sold me two bottles that were just one month from expiring and since I would have had them around to take for awhile I returned them. Otherwise, no problems.

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4 people found the following review helpful


Posted by Reviewer1733570 on Jan 04, 2015

Haven't tested it long enough but it definitely doesn't work the same as regular Tryptophan for anxiety. It may have a delayed effect though.

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3 people found the following review helpful


Posted by 5126294382651632887 on Sep 09, 2013

about 30 minutes after taking it, im ready for bed, feeling great in the morning. highly recommended!

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2 people found the following review helpful

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