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The dose for all animals is 1-3 grams per kg of charcoal.
Your dog weighs 23 kg
1 gram = 1000 mg
He would need 23,000 to 69,000 mg of charcoal.
This would be 92 to 276 capsules. It takes a lot.
NOT HELPFUL AT ALL. I am not a doctor nor do I understand metrics. I am also a bit frantic. I need to know HOW MANY 250 MG Capsules of activited charcoal to give my 45 to 50 lb dog. Please do not convert. Just give me the amount I need to give to her.