Activated charcoal, also known as activated carbon, is a medication used to treat poisonings that occurred by mouth. To be effective it must be used within a short time of the poisoning occurring, typically an hour. It does not work for poisonings by cyanide, corrosive agents, iron, lithium, alcohols, or malathion. It may be taken by mouth or given by a nasogastric tube. Other uses include inside hemoperfusion machines. Indications: Diarrhoea & poisoning due to foods, heavy meals & drugs. Flatulence due to diet & other factors. Therapeutic Class: Anti-diarrhoeal, Antidote preparations Dosage & Administration Diarrhoea: # Adult: 2-4 tab tds-qds. # Children: ? adult dose. Poisoning: # Adult: 2-4 tab/kg body weight # children: 3-4 tab/kg body weight Flatulence: # Adult: Disintegrate 1-2 tab. Repeat every 2 hr. Interaction: Ultracarbon should not be administered together with other drugs because their efficacy can be reduced.