Five mg. may be too much for her. Shave a little off, perhaps in half, and see how she does w/that. I've got all mine on 5 mg. at night. They aren't sedated but just calmer; it does help them sleep. Are you administering it at night? That may also be part of the problem. I do have one that takes 5 mg. morning and night b/c he's a particularly tricky character but he isn't sedated in the least. Each cat is different, just like humans, so you may have to play w/the dosage for a while before you get it right. Don't give up. And keep the faythe.

I just thought of something else. The Clomicalm that I get is in tablet form. When they swallow it, it probably takes longer to get into their system. Yours is a powder that goes down w/food and it may react more quickly. I don't know that for sure, not being a pharmacist or a vet, but it might be the case. Are you able to get the tablets instead of the capsules?