Hi,
I share your concern for your dog. Thanks for asking this important question. Dogs cannot take Tylenol, Motrin, Aleve or any other non-steroidal anti inflammatory other than aspirin. The other drugs can cause severe liver problems in dogs.
The dose of aspirin to give for a 50 pound dog is about 250 mg. You can figure 125 mg for a 25 pound dog. Aspirin comes in 81 mg so for your dog, you could give 3 of those if he is about 25 pounds.
Please give it on a full stomach or at least with some food.
Let me know if you need more information.
I hope your dog is better soon!
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