Without amino acids there is no life, because they are the smallest building blocks of all proteins, cells and organs. Proteins, also known as proteins, fulfil important functions and, as enzymes, even regulate the metabolism. Stress, especially unbalanced nutrition, can lead to a deficiency. This weakens the immune system and causes fatigue. Amino acids support the muscle build-up, especially when losing weight, as well as the attractiveness of skin and hair. We cannot produce the most important, i.e. essential amino acids ourselves, we have to take them in as food: L-lysine, L-leucine, L-phenyalanine, L-valine, L-threonine, L-isoleucine, L-metionine, L-histidine, L-tryptophan, red. L-glutathione, N-acetyl-cysteine.