The insufficient intake of lysine in the diet can lead to a poor appetite and anaemia. It may also cause anxiety, headaches, dizziness, and nausea. Lysine deficiency in the body has also been associated with reduced ability to concentrate, pneumonia, nephrosis, and acidosis, as well as with rickets in children.
The main sources of lysine are leafy vegetables, pulses and legumes, meat, poultry, milk and milk products, and ripe fruits. Lysine inhibits the growth of viruses. Along with vitamin C, zinc, and vitamin A, it helps in eliminating some of the viral infections. Vitamin C protects lysine in the body, so the combination of lysine and vitamin C has a much stronger anti-virus effect than if either is used separately.
Lysine is considered to be a natural remedy for cold sores, shingles, and genital herpes.
Lysine is generally available in 500 mg capsules or tablets. The usual dose is 1-2 daily, just before mealtimes. In case that you have herpes, lysine supplements (L-lysine) in doses of 3-6 grams daily - plus lysine rich foods - are strongly recommended. For cold sores or fever blisters prevention take 500 to 1000 mg L-lysine daily, between meals.