15,95 incl. btw

As an amino acid, L-tryptophan is one of the building blocks of protein, but unlike some amino acids, L-tryptophan is considered essential because the body cannot manufacture it itself. L-tryptophan is a substance that can be converted to serotonin in the brain. We have combined this popular amino acid with vitamin B6 and magnesium (as citrate). Two substances involved in the conversion of tryptophan to the neurotransmitter serotonin

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