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Dr. Gary
Dr. Gary, Dog Veterinarian
Category: Dog
Satisfied Customers: 3017
Experience:  DVM, Emergency Veterinarian; BS (Physiology) Michigan State Univ
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I have an English mastiff that has been very down and out

Customer Question

I have an English mastiff that has been very down and out not eating so we gave him a dose of penicillin and he got better but now he's back down how much more and often should we give him it
JA: I'm sorry to hear that. What is the dog's name and age?
Customer: Corbin 9 1/2
JA: Is there anything else important you think the Veterinarian should know about corbin?
Customer: He was very healthy and active and it just came on overnight
Submitted: 7 months ago.
Category: Dog
Expert:  PitRottMommy replied 7 months ago.

Hello, JACustomer. I have been a Veterinary Nurse for over 15 years and would be happy to help you today. I'm reviewing your question right now.

Expert:  PitRottMommy replied 7 months ago.

How much does Corbin weigh? How many milligrams is the penicillin you have? In what form is it?

Customer: replied 7 months ago.
150lbs 60 ml of 300,000 units per ml. Pro pen g, injection
Expert:  PitRottMommy replied 7 months ago.

The dosage is available here:

1mL/30# ***** SQ every 48 hours. This would be 5mL per dosing for a dog his size.

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Customer: replied 7 months ago.
How long should we continue the dosage or how many days?
Expert:  PitRottMommy replied 7 months ago.

Most antibiotic treatments last at least 7 days. You need to continue dosing at least 48 hours past symptom resolution.

Expert:  PitRottMommy replied 7 months ago.

Checking in, JA Customer. How is your companion doing?