How Much Amoxyxillin For Dog. So if your dog weighs 10 pounds, the dose would be 10 pounds x 5 mg/lb = 50 mg twice daily. How much amoxicillin can you give a dog?

The recommended dosage is 5 mg/lb of body weight twice a day. Given once or twice a day. Amoxicillin is available in 250mg and 500mg capsules.