HI, i am fostering a cat, she is thought to be 15+. Shes on senior food, wet and dry. At first i just thought she was a moody cat, but i have since realised she seem stiff on her legs and her back is arched as she walks. She HATES being put in a carrier to be taken to the vets and gets that wound up she drasticly drools and shakes! So i was just wondering if any one has any tips on some supplements to give her... ive been told feline cortaflex... does anyone have any reviews on this product or any others. Thanks Kirsty. x