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About L-Tryptophan

Because of its calming effect, many rely on L-Tryptophan to be health supplements alleviate stress-attacks, as well as to encourage restful sleep. Unlike sedative drugs, L-Tryptophan is not associated with unwanted side effects, such as disturbed sleep patterns or grogginess. It can be taken regularly one hour before retiring as a remedy for insomnia.

L-Tryptophan >5 HTP à Serotonin > N-acetyl-serotonin >melatonin

Serotonin is an important neurotransmitter, which regulates several vital processes in the body; including sleep, emotional stability, pain sensitivity and cravings. When levels of serotonin drop too low, a vast array of symptoms, ranging from anxiety and insomnia to obsessive/compulsive behavior and suicidal depression can occur.

The body is able to manufacture serotonin from the amino acid L-Tryptophan, which is found in certain foods. Many people who reach for ice cream, sweets and pastries when they feel stressed or depressed are instinctively attempting to increase their uptake of L-Tryptophan to elevate their serotonin levels and improve their mood. Unfortunately, it takes great quantities of these "comfort foods" (with their unhelpful fat, sugar and calories) to significantly affect serotonin levels. Taking L-Tryptophan in the form of health supplements from our smartshop instead, can not only quickly improve your mood; it can even help control your appetite.

Use of L-Tryptophan

Take 1 to 2 capsules (of 400 mg) a day on an empty stomach with water. (When used for sleep, take this 30-60 minutes before bedtime)


60 caps per package.

Each capsule contains

  • L-tryptophan 350 mg
  • Vitamin B6 (Pyridoxine HCl) 6 mg (300% US RDA*)
  • Magnesium asparate en magnesium stearate

* US Recommended Daily Allowance

Serving Size 1 Capsule

Amount Per Serving
L-Tryptophan 500 mg*

*Daily Value not established.

Other ingredients: Gelatin, brown rice flour, may contain one or both of the following: magnesium stearate, silica.


The normal dose of L-Tryptophan is 400 mg - 800 mg per day and is best taken on an empty stomach. The use of L-Tryptophan is counter-indicated in some instances, for example in those at high risk of heart disease or strokes, in people with severe allergies, or for those taking anti-depressant medication, MAO inhibitors

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