Petco Text Logo
Petco Pet Logo
  • Two Easy Ways to Start Earning Rewards!

    rewards header
    Become a member today!
    Members-only pricing and offers, personalized care notifications, Vital Care points back on every purchase and more!
    Petco Pay LogoBecome a credit card member today!

    Earn 2X Pals Rewards points at Petco
    when you use Petco Pay!

    APPLY NOW
    Learn More About Petco Pay Benefits

My puppy is on Composure Pro for nervousness. Why are her stools soft?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | spayed | 1 year and 3 months old | 30 lbs

Our vet prescribed composure pro for our puppy to help with some nervousness. We have been giving it once a day for the past days or so. Can this cause soft/mushy stools? She's not going frequently and she is fine in every other way. Just seems to have soft poops

1 Answer

Most Helpful Answer

Jennifer Summerfield, DVM CPDT-KA

Answered By Jennifer Summerfield, DVM CPDT-KA

Veterinarian, Certified Dog Trainer

Published on June 17th, 2018

Hi there. This is not a common side effect of Composure Pro in my experience, but any oral medication could potentially cause some changes in stool consistency if Phoebe has a sensitive stomach. If it doesn't seem to be bothering her, I would suggest giving it a week or two to see if the problem resolves once she gets used to the Composure. If the soft stools continue, you can try stopping the supplement to see if they return to normal. In that case, it's possible that she might do better with a different calming supplement such as Solliquin or Zylkene.
Vote Icon2Pet Parents found this answer helpful

Smart Picks for Smart Questions

Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Share

Styled arrow button