what is the best way to take activated charcoal
1 For oral dosage form (oral suspension): 2  For treatment of poisoning: 3  Adults and teenagersâDose is usually 50 to 100 grams of activated charcoal given one time.  Children 1 through 12 years of ageâDose is usually 25 to 50 grams of activated charcoal given one time.