Lamberts® l-tyrosine is presented as a free-form amino acid for maximum absorption. Each capsule provides a full 500mg of l-tyrosine. Amino acids are classified as either essential or non-essential. Essential amino acids cannot be synthesised in the body and must be obtained from the diet whereas non-essential amino acids whilst still essential for health can be synthesised in the body and are therefore not classified as ‘essential’. Tyrosine is considered a non-essential amino acid because the body can make it from phenylalanine but it is also obtained from high protein foods such as cheese chicken fish and soya. Daily intake: 1- 4 capsules lamberts quantity – 60 capsules l-tyrosine 500mg.