Activated charcoal is well known as an antidote as it adsorbs most organic toxins, chemicals and poisons before they can harm the body. Some Emergency Rooms administer large doses of activated charcoal for certain types of poisoning.
Activated Charcoal is as an emergency decontaminant in the gastrointestinal (GI) tract, which includes the stomach and intestines. Activated charcoal is considered to be the most effective single agent available. It is used after a person swallows or adsorbs almost any toxic drug or chemical.
As with any substance, you should always check with a doctor or medical professional before use, especially in an emergency or life threatening situation or if there is any other underlying health problem. Charcoal is not known to be toxic, though it should not be taken within two hours of vitamins or medications because it will keep the body from adsorbing them. Care should also be taken to find a high quality form of charcoal.