Updated On September 23rd, 2025
Pet's info: Dog | Newfoundland | Female | spayed | 115 lbs
I gave my 115lb dog 10 ml injectable penicillin by mistake will she be ok
1 Answer
Published on May 21st, 2018
She will likely be ok, however she could get diarrhea since the penicillin in this 10-fold overdose likely killed every single bacterium in your dog including the good bacteria in the digestive system. Depending on whether this was a long-acting or short acting penicillin you should wait a few days and add some probiotics to her food to help reestablish a healthy intestinal flora.
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