My 14 year old Dushka peed blood all over the floor during last night, so we were off to the vet this morning. He has given her amoxicillin plus an anti-inflammatory and a pain injection. But he also suggested I feed her a spoonful of mashed up courgette (zucchini to Americans) every day for a week, as it cleanses the urinary system. I am familiar with pumpkin for the digestive tract, but this is something new to me. Has anyone any experience?