Two Easy Ways to Start Earning Rewards!
Earn 2X Pals Rewards points at Petco
when you use Petco Pay!
Updated on September 23rd, 2025
Pet's info: Dog | Boston Terrier | Male | unneutered | 2 months and 4 days old | 20.5 lbs
After seeing my 9-week-old puppy had mucus and blood in his poop I took him to the vet right away. I've been treating him for coccidia with Albon for five days, and when his stools stayed the same the vet also prescribed Flagyl, of which he's just had his second dose. At no point has he been acting sick or uncomfortable. He's eating, drinking, playing, and sleeping like a normal, happy puppy. But the quality of his poop still hasn't improved. Do I need to be worried?
2 Answers

Answered By Jennifer Summerfield, DVM CPDT-KA
Veterinarian, Certified Dog Trainer
Published on November 26th, 2016
Answered By David Elbeze, DVM, MRCVS
Veterinarian
I think you need to give the Flagyl a little longer, it sometimes takes a week to take effect, and as long as Boho is fine in himself I wouldn't be too worried yet. An infection is the most probable cause, but 8f it doesn't go away he will need some tests (faecal, bloods) in order to rule out other possible conditions.
1Pet Parents found this answer helpful