Diarrhea

My boy (8 months old) has diarrhea (sometimes bloody) that does not go away for 3 weeks. Sometimes it seems to get better but after 1 2 days, it gets worse again. We used Flagyl, worm killer, diafurly, and brewers yeast supplement under the direction of veterinary but doesn't work.

Hello!  I am not clear from this message when you last saw a vet, but if diarrhoea with blood has been going on for so long, your dogs' hydration level may be at risk and they should see a vet again to have this checked.

Worms are indeed a common cause of puppy diarrhoea but there are also some possible viral causes, all bacterial causes, dietary indescretions and some possible internal causes such as liver disease.     Veterinary treatment has two parts;. One is to find and address the underlying cause which may take time.   Meanwhile, however, your pup needs to be checked regularly to ensure that they are not losing too much blood or becoming dehydrated, so we would advise having your vet resee the patient every few days in order to review your dogs' progress.   Best of luck and please do let us know how you get on.