How long does it take for activated charcoal to work?
An individual must take or be given activated charcoal within 1 to 4 hours of consuming a toxin for it to work. The charcoal cannot work if the person has already digested the toxin or drug and it is no longer in the stomach.
How often should you take activated charcoal?
Adults and teenagers—At first, the dose is 50 to 100 grams. Then the dose may be 12.5 grams given every hour, 25 grams given every two hours, or 50 grams given every four hours. Each dose should be mixed with water.
Is it safe to take activated charcoal?
Activated charcoal is safe for most adults when used short-term. Side effects of activated charcoal include constipation and black stools. More serious, but rare, side effects are a slowing or blockage of the intestinal tract, regurgitation into the lungs, and dehydration.