I'm a newbie. Have been using vetisulin for a couple weeks. Thankfully did not fall into blindly following vet when he told be to double her once a day dose. Went to twice a day halfing initially does of 3. Tolerated it but was still peeing out of box do upped to 2. Which made her more hungry so like an idiot i increased her to 3 this morning. Panicked after reading some posts so i gave her some dry food hoping to avoid her going too low. I have not been monitoring because i haven't located a meter for cats. I thought i read somewhere they register different. If I can use one for humans... any suggestions for which to buy? I got overwhelmed at walgreens.