Final answer:
The usual dose for activated charcoal is up to 25 grams for pediatric patients and 50 to 100 grams for adults, utilized in the treatment of poisonings or overdoses.
Step-by-step explanation:
The usual dose for activated charcoal is up to 25 grams for a pediatric patient and up to 50 to 100 grams for an adult patient. Activated charcoal is commonly used in medical settings for the emergency treatment of certain kinds of poisoning or overdose, when the substance ingested is known to be adsorbed by charcoal. It is crucial to administer the proper dosage based on the patient's age and the nature of the poisoning.