I'm such a fan of Dr. Karlburg. The first two vets I took my half Siamese to were totally intimidated by her cattitude. Dr. Karlburg wasn't and was very knowledgeable. But what won me over was when my male tabby was having recurrent urinary issues (FLUTD). It was totally my fault because I took him off the prescription food for a pet store brand that claimed to do the same thing. (Never doing that again!!) Dr. Karlburg prescribed a 30 day supplement to rebuild the lining of his bladder. This is a treatment that not all vets use but Dr. Karlburg said he's had good luck with. My kitty has been healthy ever since.