THOMAS LAB Fel-O-Lysine Powder, 3-Pound

I can only presume this is a very weak form of lysine. With this product you have to use a teaspoon of product for a dose of lysine. The product I was buying before only used 1/8-1/4 teaspoon per dose. Getting cats to eat so much powder with dry food is impossible, where as the other got eaten. I will not be purchasing this again. Not worth it at all.

So much more economical that buying lysine chews. Kitties love the chews, but I can mix powder in some soft food and kitties devour. I can get them to take more lysine using the powder. Got my kitties from a rescuer and they use this since so many kitties they rescue from shelters have URI. Lasts a long time so if saving $ is your motivation, this is way to go

Since I started adding this to my cat's water bowls I have noticed a significant reduction in the sneezing and occasional runny noses that they had.It appears to be a very good product and I would not hesitate to make further purchase.

The breeder I bought my Sphynx from swears by this stuff to keep them from getting sick. They tend to get ill more often since they come from a cattery. I can tell when I forget to put a scoop in their food. It takes a while to get them back to normal.

My cats tolerate this powder very well and it seems to be doing the job. My vet recommended this product for my cat that has digestive issues and the price of this package is about a third of what she charged for the exact same product.

Helped one of my kitties with watery eyes, can't complain in that regard. Docked a star because it seems to make a crystallized mess at the bottom of the food bowl. Wish it was easier to clean up.

Excellent value for the price. Easy to mix on wet or dry food and the cats dont even notice its there. This is a big enough bag that even with 8 cats in the house it will last us forever!

I have used this before and it is an excellent L-Lysine supplement for cats! Easy to use, just sprinkle it over their canned food and they eat it right up!