We use l-lysine to help suppress the symptoms of our cat with feline herpes. When he's on a regular dose (a higher dose of 500 mg, 2x/day), his runny/ulcerated eyes are calm and clear, and his wet sneezing is down to a minimum.<br /><br />First we tried the goopy paste from the vet's office ([[ASIN:B0012GWCPM Enisyl-F (L-Lysine) Nutritional Supplement for Cats, Metered Dose Pump 100 mL]]) but my cat was having none of that! The taste, the texture...something about that paste was off-putting to him.<br /><br />Lysine powder works great, and offers great savings. I tasted the powder myself--a little bitter, but in a highly-flavored wet food, it didn't seem to bother our cat. Opening l-lysine capsules and mixing the powder into his wet food worked just fine but got expensive after a while. Plus, all of those gelatin capsules were just wasteful (and annoying).<br /><br />Details:<br /><br />* This 1 lb. bottle of pharmaceutical grade (USP) l-lysine monohydrochloride contains 822 1/4 teaspoon servings.<br /><br />* A level 1/4 teaspoon of powder = 435 mg of lysine. (It's important to measure properly when dosing your cat; consult your vet for the right dose for your cat.)<br /><br />* This "powder" is far more granular/coarse than the powder in gelatin capsules: think a slightly finer laundry powder or coarse-ground black pepper. You will likely need to serve this in wet food, even if just a dollop of highly-flavored wet food to bind the granules. (This coarseness is why I dropped the score one star; a finer powder is slightly easier to mix in and mask.)<br /><br />* The container is naturally larger than the average vitamin bottle. Envision the dimensions of a canister of oats, and you're close.<br /><br />* The powder is sold by weight and settles in the bottle. You may want to transfer some of the powder to an empty vitamin bottle (not clear) for easier reach of the measuring spoon.<br /><br />NOW Foods is a good, reliable brand with a solid reputation. If you're looking for an affordable and easy way to help your cat with feline herpes, you really can't go wrong with this product.

I seem to be one of the few people that bought this not for their cat, but for themselves. I used to take lysine in pill form but the pills were enormous and hard to swallow. When I started making smoothies every morning, I figured why not integrate the lysine into it and get it all out of the way in one tasty drink? Well, if you're thinking the same thing, here's my observation.<br /><br />As others have noted, it's not exactly a fine powder so much as a sandy sort of granule texture. Not that I noticed once it was in the smoothie, but good to know. As for the taste, I haven't experimented enough to really determine this, but I have a suspicion that the suggested serving (1/4 teaspoon) gives my ~16 oz. smoothies a somewhat saltier taste. I might need to experiment with other ingredients to mask the flavor because it is a little noticeable, though not completely unbearable.<br /><br />In short, I give it 4/5 stars for disappointing on taste and having a coarser texture than expected--but it still is a great way to incorporate lysine into your day and get a LOT of it in one package. Cats probably don't care as much, so go for it if that's your target audience.

L-Lysine is an amino acid that builds connective tissues, aids calcium absorption, and effectively and powerfully fights cold sores in and around the mouth. I'm so glad to have discovered this powder-form of Lysine, since I'm avoiding capsules and gel caps because they seem to coat the lining of my intestines. I know I feel so much better now that I'm no longer taking handfuls of vitamins and mineral pills. Rather, I take pure powdered forms of nutrients, and eat healthy, whole foods for my vitamins and minerals. So, I stir a quarter teaspoon of the Lysine powder into a glass of water and drink it. The taste is very mild - almost non-existent. It is pure Lysine powder with nothing else added; no unhealthy fillers or preservatives. Also, the size of the container lasts and lasts, making this an excellent, economical choice.

My cats have feline-herpes so I give them about 1/8-1/4 tsp per day in their wet food. It's tasteless so they take it with their food with ease. Feline herpes is a virus that appears to be a cold with sneezing & puffy eyes. Left untreated will turn into an upper respiratory infection. L-Lysine is a simple & very affordable fix. Saved me thousands in vet bills over the course of 13 years thus far.<br />One more FYI: If you take1/2 tsp of L-Lysine every other day, you will NEVER suffer from cold sores/fever blisters again!

I have had great success using this product. I was using a different L-lysine product for many years and switched to this brand several months ago. It is an extremely good value and works exactly the same as the other L-lysine product I used for years. The value is exceptional. My veterinarian suggested L-lysine for my cat and this is what I use it for. He has a type of feline herpes and it affects his eyes. When he has an outbreak his eyes will be extremely teary and crusty. They also get very swollen. As long as I use the L-lysine supplement his eyes will stay clear about 90-95% of the time. I'm so glad I found this brand, which lasts a lot longer and costs a lot less than the one I was using before. My cat is very finicky and he always eats this. I sprinkle the recommended dose on his wet food. There is no scoop included in this so I calculated the dose and figured it to be almost exactly the same as the other brand I was using. I just kept the little plastic scoop from the other container. The best way I can describe the color and consistency of this product is that it's similar to a powdered laundry detergent. The other brand was just like this. It also has a fishy smell, and as I have already stated, my cat gobbles it right up. I would definitely recommend this product for this purpose.

I suffer from canker sores often usually due to stress. They are painful and make it difficult to eat and swallow at times. I now take 1/4 tsp L-lysine powder 2x a day and it seems to really help with the healing of the sores and diminish the severity those that could become extreme. I simply mix the powder into a little bit of water and drink it down. I don't mind the taste. And, as I have a difficult time swallowing pills, this form is perfect for me. I also have osteoporosis and have read that this enzyme can help with the absorption of calcium. I'm quite happy with the product and will continue to make it a part of my daily health routine.