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My senior dog stopped vomiting, but diarrhea continues. What's next?

Updated on September 23rd, 2025

Pet's info: Dog | Collie | Male | unneutered | 10 years and 8 months old | 57 lbs

Dog started vomiting and diarrhea. Inj. of Cerenia 20 ml resolved vomiting but now diarrhea continuing - no solids just wet diarrhea - light brown but slightly darker now - but no obvious blood. Not eaten 30 hours. Drinks normal, no excessive. Water works appear all ok. I feel he has an infection and needs antibiotics? 11 y.o. male - having no previous problems. Have bitch - no signs of problems there, receiving same food as male. Food - whole chicken or beef - with small amount dog dry

1 Answer

Most Helpful Answer

Jeffrey Milner

Answered By Jeffrey Milner

Veterinarian

Published on September 3rd, 2017

Glad to hear that the vomiting was resolved with Cerenia. This is usually a pretty good indication that there is no serious obstruction within the upper or lower intestinal tract. If there is continued diarrhea, the addition of an antibiotic / anti inflammatory such as metronidazole would be my next step. You can certainly use medications such as pepto bismol or maalox but I do not find them to be very effective. They do not actually address inflammation in a particularly effective manner. Another possibility unfortunately that can not be ignored in an 11 year old animal are certain types of cancer. However, I would not truly begin to consider this strongly unless there has been a longer history of problems, including weight loss and muscle wasting. Hope this makes sense.
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