I have two rescue kittens that were continually showing symptoms of the feline herepes virus, which resulted in multiple trips to the Vet. Since I have been using this product, they have been symptom free. The runny eyes and noses have stopped. The only problem is that they are not enthusiastic about licking the paste, so I have solved the problem by putting the 1/4 teaspoon portion into an oral syringe, and give it to them that way, twice per day. It's clean and neat, and I'm always sure that they are each getting the exact dose that they need. Filling the syringe from the back with the 1/4 teaspoon dose from the tube of Viralys, before inserting the plunger works just great, rather than trying to vacuum it up from the tip. There's no waste and the measuring is easy.