The problem of herpes, unfortunately, is familiar to many people, and it is not so easy to get rid of it. Despite the fact that the activity of this virus can be significantly reduced by using special medications, I still decided to try to "put it on a diet". The supplement L-Lysine is not only an essential amino acid, which athletes take, but also a real salvation for those who suffer from herpes type 1, that is "colds" on the lips.

I give this to my 16yo son to optimise his height. There are 4 amino acids important for lineal bone growth: L-Arginine, L-Lysine, L-Ornithine and L-Leusine. These 4 are absolutely fundamental to bone and cartilage development. Bone length is the primary factory of our height. These 4 amino acids can increase growth hormone secretion. GH is most potent on younger people. These are good nutrient for late teens who want to stimulate their growth hormone levels before the growth plates have fused. I hope my son can reach his optimal height by taking these amino acids.

Lysine is a supplement I have added to my daily routine in order to avoid cold sores. It works for me. I trust Natural Factors products. In general, I consider them to be quality products (I also take their Omega Oil product as it is one of the highest quality on the market).

I felt more energetic after taking two capsules in the morning! I Haven't tried any other L-Lysine products so I can not compare with other brands. I still think that this brand is high quality. If you take the suggested amount, the package doesn't last very long, so next time I will buy larger package.

Another high-quality supplement from Natural Factors. I have been taking Natural Factors supplements for about 10 years and can attest to their quality, effectiveness and potency. They are also very reasonably priced. And IHerb offers fast, free delivery.

I like the quality of this one. I use it regularly, and it helps if you get a cold sore, which is a great benefit.

The problem of herpes, unfortunately, is familiar to many people, and it is not so easy to get rid of it. i suffer from herpes type 1, that is "colds" on the lips and whit this amino acid i keep it under the. control

I had herpes almost every month and since I started to take l-lysine,I have not suffered from it any more,I am very happy

I really like Natural Factors brand since Canadian supplements go through a strict control procedures. Even though sometimes the additional ingredients in this brand are not perfect like magnesium stereate. Anyway, overall quality is great and l lysine is essential amino acid that is good for immune health.

I have been taking this product for 4 mths now and believe it has given me the extra energy I need at the gym and also work and home. No real taste , but easy to swallow. Will buy again with the great price given.