“Bought for cat joint pain. I bought this red box med because it said the green box, which my cat responded amazingly well to, was not available. My cat suddenly, without prior issues, became very constipated. I give 3 stars because as a cat parent I know my cats history. But I did not do due diligence to 100% confirm these specific meds were the culprit. But luckily the green meds are available and I will give them the glowing recommendation they deserve.”