L-Tryptophan BioTechUSA 60 caps

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Why do we recommend the product BioTechUSA L-Tryptophan?

  • The L-Tryptophan amino acid is a precursor of melatonin
  • The L-Tryptophan amino acid is a precursor of serotonin for 60 days

L-Tryptophane is a versatile essential amino acid that the body cannot produce, or can only produce in insufficient amounts. L-tryptophan is easy to replace with a balanced diet and good quality nutrients. Duck, pork, cottage cheese, and eggs are rich in L-tryptophan. If you want to cover your L-tryptophan intake from other sources as well, then you should take the BioTechUSA L-Tryptophan dietary supplement capsules. Thanks to its capsule form, it is easy to portion out and take with you anywhere during the day.

Who do we recommend the product BioTechUSA L-Tryptophan?

  • for those who need the supplementation of L-tryptophan essential amino acid
  • for those looking for a capsule product

What does BioTechUSA L-Tryptophan contain?

One serving (1 capsule) contains:

  • 500 mg of L-tryptophan

Packaging: 90 capsules (for 30 days)

Essential amino acids

Essential amino acids (9 types of which we know) are essential for the human body because they are not or only insufficiently produced by the body. That is why it is particularly important to supply them from external sources, preferably in the optimal amount and proportion.

L-tryptophan is also an essential amino acid that performs many functions in the body, it also serves as a precursor of serotonin and melatonin.

L-tryptophan, like any other BioTechUSA product, contains safe, carefully selected ingredients.


Take one capsule daily with a glass of water one hour before bedtime. Do not exceed the recommended daily intake!

Keep this product out of the reach of small children. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Its use is not recommended in case of any known underlying disease, or medication!


L-Tryptophan 42%, bulking agent (calcium phosphates), capsule shell [gelatine,glazing agent (shellac), colour (iron oxides and hydroxides), acidity regulator(ammonium hydroxide), acidity regulator (potassium hydroxide)], anti-cakingagents (magnesium salts of fatty acids, silicone dioxide). Made in a plantthat manufactures milk, egg, gluten, soy, crustaceans, sulphur dioxide and nutscontaining foods. WARNINGS: Keep out of reach of children.

Food supplementsdo not replace a balanced nutrition and healthy lifestyle. Not recommended forpeople with medical condition and/or taking medications.

Supplement facts

Supplement Facts | Daily amount: 1 capsule | Servings per container: 60


in 1 capsule


500 mg




Do not exceed recommended dosage

Food supplements should not be used as a substitute for a varied diet and healthy lifestyle. 


Standard delivery is available right across the UK mainland and We do not post to P.O. BOX Address or any Address that use as virtual office,Warehouse, Office or Commercial Properties. Your order will be cancelled and charges will be applied for cancellation. Contact us for delivery into any commercial  property


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Business Information:

Complete Health Limited, 

 Registered in England

Company Reg no. 12787301. 

VAT Registration No. GB356803092 

Phone: 0800 689 0408