It is extremely dangerous to administer any medication to your pet without consulting a veterinarian.
Here's why:
* Dosage is critical: The correct dosage of penicillin for a 50 lb dog depends on many factors, including the specific type of penicillin, the severity of the infection, and the dog's overall health. Giving too much could be toxic, while giving too little might not be effective.
* Potential side effects: Penicillin, like any medication, can have side effects, some of which can be serious.
* Underlying conditions: Your dog might have underlying health issues that could affect how they respond to penicillin.
Please contact your veterinarian immediately for advice on how to treat your dog. They can provide a safe and effective treatment plan tailored to your dog's specific needs.