My vet gave me Diazepam 5mg (Valium) for my 3 yr old kitty who has been peeing in certain spots in my house. The Vet said to take 1/4 of a pill daily. So technically, the 5 mg pill is only 1.5 mg....right?? How bad will that be for him?? There are side affects...and I am really really scared to give it to him. He is diabetic....and I am just afraid something bad might happen. Any ideas, opinions? Help if you can. THANKS!!