L-Tryptophan, 60 capsules

An amino acid for the nerves and a good night's sleep

Around 500 amino acids occur in nature. Twenty of these amino acids act as building blocks for proteins in the human body and are referred to as “fundamental amino acids”. These essential amino acids are classified into the groups “essential”, “semi-essential” and “non-essential”. L-Tryptophan is one of the essential amino acids, i.e. the body cannot synthesize it itself from other amino acids and is entirely dependent on dietary intake to meet its daily requirement.

The tryptophan content in food is too low to be used as a basis for the production of dietary supplements. Tryptophan for supplements is usually obtained by a customised fermentation process. Since microorganisms are able to synthesise tryptophan themselves, this capability is utilised in the process. The natural L-form of tryptophan is produced. The bioavailability of the natural L-form can be reduced by the synthetic D-form, since the latter has no effect itself. For this reason, D-tryptophan should not be used as a supplement.

Tryptophan serves, among other things, as a precursor for niacin (vitamin B3), 5-HTP (5-hydroxytryptophan), the neurotransmitter serotonin and the hormone melatonin. It can cross the blood–brain barrier, but is sensitive to competition from other amino acids. Therefore it is advisable to take a tryptophan supplement on an empty stomach and separately from other amino acids.

Active ingredients

* No reference intake value specified according to the EU Food Information to Consumers (FIC) Regulation.

Ingredients

L-Tryptophan, anti-caking agent (rice fibres), vegetarian capsule (pullulan, from fermented cassava starch).

Manufacturer's recommended intake

As a dietary supplement for adults, take 1 capsule per day between meals (at least half an hour before or two hours after a meal) or before going to bed.

Manufacturer's warning

Do not take in combination with medicines that affect brain metabolism, for example antidepressants and tranquillisers.

Storage instructions

Store in a cool, dry place, protected from light (do not refrigerate).

Legal notice

The recommended daily intake should not be exceeded. Dietary supplements are not a substitute for a balanced and varied diet and a healthy lifestyle. Keep out of reach of young children.

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