Dog had diarrhea, on Metronidazole. Is no poop after 24 hours normal?

Sometimes when they have diarrhea and haven't eaten as much it takes a few days to build up enough stool to have a proper bowel movement. If he is struggling or straining to poop then yes, I would be concerned. But if he is eating, drinking, not vomiting and acting normally, then I wouldn't be concerned. If he hasn't had a BM by tomorrow morning, I would have your vet take another look at him. I hope this helps!

You should not be worried yet, after several days of diarrhea, the intestines empty completely and it takes 2-4 days to start and having stools again, as long as he is otherwise back to normal that's the most important thing. Flagyl also tends to cause slight constipation, but again nothing to be worried about just yet.

Hi there. No, metronidazole does not cause constipation. It's normal for a cat to go 2-3 days without a bowel movement if he is getting over diarrhea - it takes time for the intestinal tract to fill up again once the diarrhea is resolved. As long as he is acting normal otherwise (eating and drinking, not vomiting, and not straining to defecate), there should be no cause for concern. He will have a bowel movement when he's ready, probably sometime in the next day or two :)

Sometimes a dog will not "go" for 24 - 48 hours after anti-diarrheal medications have been started. Think of it like this: the system was essentially empty due to the [diarrhea](https://www.petcoach.co/dog/condition/diarrhea-1/), and if the medication is effective, it will slow down the transit time of food through the GI tract and it will take a couple of days for him to actually need to poop again. As long as he is eating and drinking and feeling good, I would not immediately panic. I do often see dogs recovering from diarrhea go as much as 48 - 72 hours before having a bowel movement. If it's longer than this, or if he's not feeling well, get him rechecked immediately.

Hi there. In my experience, it often takes 48 hours or so to see improvement in diarrhea after starting metronidazole. Full resolution of the problem may take another 2-3 days from there. So if Jake's diarrhea seems to be improving and his appetite is better, this is a good sign. I would continue with the current treatment plan prescribed by your veterinarian. If his diarrhea has not resolved in another 2-3 days, then I would recommend taking him back in for a recheck to see if some other type of treatment is needed.

Hi! I would say that it is likely ok. Sometimes it takes a bit longer to see results. If it is just soft and Snowball is otherwise fine, I would just give it a few days before getting concerned. Keep in mind that metronidazole is not always a curative medication for diarrhea but rather an antibiotic with anti-inflammatory properties that help with colitis. This means that it will not treat an underlying disease every time. Perhaps try a few days on a bland diet mostly composed of boiled chicken or turkey and rice. If no resolution within a few days, it may be appropriate to start her on a probiotic or try a different medication such as Tylosin. Best of luck with her!

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! This is very normal! I always warn my clients that after severe diarrhea, fasting them, starting chicken and rice and metronidazole that their dog may not have a bowel movement for several days. As long as Hercules is eating, drinking, not straining to poop and is not lethargic the poop with come! If he is straining, not eating or vomiting he should be rechecked. The yogurt is fine in small amounts. Adult dogs and cats are actually lactose intolerant and dairy products can cause Gi signs in some animals. If you want to use a probiotic I would use one made for animals like Purina Fortiflora. If he is tolerating the yogurt you can continue it. Have a great weekend!