Hello. I am so sorry that no one has addressed your concerns. Fortunately, there is usually nothing overtly toxic with overdosing on a joint supplement, & if Louis is doing well at this time, he should continue to do so. He may experience some gastric upset, so diarrhea is still a possibility. I do want you to always be on the lookout for additional stomach problems such as vomiting, gagging/retching, bloating or perceived abdominal pain. If Louis seems at all uncomfortable, please contact your veterinarian or an emergency clinic. Again, my apologies that no one responded to you when you first posted your concerns. Thanks for contacting Petco Pet Education Center, formerly Petcoach.