My older cat has been diagnosed with Cystitis. She's seen the vet, her urine has been tested. She was given an injection along with CystiCalm tablets which are nearly finished. I've bought Cystease as a back up. She seems to do well then has a relapse at night a few days later. Also she's a big girl and I usually clean her bottom but at the moment that's not working and she's in discomfort. The dosage of Cystease for her size is 2 capsules. Should I give her then both at the same time? I'm really struggling with this as I don't know what to do to help her. Can you help with some advice?