NOW Supplements, L-Lysine (L-Lysine Hydrochloride) 500 mg, Amino Acid, 250 Tablets

A must for me as an immune boost, nothing works better. I have been taking it for 3-4 years with great results during sick season. Highly recommend. If you feeling sick or get a sore blister -double/triple the dose.

I have been reading a very useful book - ‘Restoring Your Digestive Health’ - by Jordan S Rubin and Joseph Brasco, both MDs. They have a section titled ‘Sub-Par Supplements’ in the book, and interestingly, this section lists amino acid supplements. Many Amino acid supplements are sold to athletes and bodybuilders to help them build muscle strength. The problem with these supplements, however, is that they are a far cry from the amino acids in food. In the protein from food sources, different kinds of amino acids are bound together in long molecule chains, but in supplements the amino acids are free form or unbound. Each type of amino acid is sold as an isolate. Research suggests that these isolate, free-form amino acids are not absorbed adequately. Cofactors present in food sources probably help the body metabolize amino acids, but those cofactors are not present in free form amino acids. As long as you are getting enough protein in your food, you do not need to take amino acid supplements. Consume lacto-fermented foods and take high quality digestive enzymes to improve your protein digestion if you feel that you are deficient in amino acids. In general, we do not recommend these supplements for most patients.

Taking these for shingles. Not sure if they’re working but good price for them anyway.

got this for my cat to offset frequent eye/congestion , works well when I can get him to take it

Product is quality

I have not had a cold for 5 years, since I started taking this.

I take these because I have always had a problem with canker sores in my mouth, but since I started taking this they have stopped. Took them daily at first now just 3 or 4 times a week. Good stuff

Lower prices

I find this a cheap way to stop getting a cold sore if you down these immediately. No reason to buy the expensive tabs when this gets right into your system just double up on the doses when you first start taking them and doing immediately when you feel a cold sore coming on they are great and have used them for years.

Like it,good for health