I am picking up meds for my kitty tonight-the vet gave me the option of pills or liquid I said liquid-Which is the best choice? I picked the liquid because I figured I could just mix it in with his food is that how it works? or do I have to give it to him orally? If so I will opt for the pills.Thanks for any input-even with my other cat being 16 I have never had to medicate a cat-I am so new to this.