[bren]

I posted this on your other thread:

I've given Max and Abbie Benadryl in the past. The first aid book for dogs says to give 1mg per pound of dog every 6-8 hours. Since there's 12.5 mg/teaspoon and Max is 11 lbs, I give him just under a teaspoon. Abbie is 14.5 lbs so she gets just under 1 1/4 teaspoon. If he's 4 lbs, you could have given him 1/3 teaspoon so he should be fine.