Activated charcoal dosing maximum for an adult by weight?

Activated charcoal dosing maximum for an adult by weight?

• A. 25 g
• B. 50 g
• C. 75 g
• D. 100 g

Answer: (B)

Activated charcoal dosing is based on weight, but there is a safety cap for adults. In practice you determine the dose from the patient’s body weight, but you never exceed the fixed adult maximum single dose. That cap exists because larger volumes raise the risk of vomiting and aspiration, and beyond a certain amount additional charcoal doesn’t provide extra adsorption of toxins. So, the correct approach is to use the weight-based calculation only up to that adult maximum. If the weight would suggest more, you administer the cap amount instead. The smaller doses risk under-treating, while doses above the cap bring higher risk without additional benefit. Administer the charcoal as a slurry with water and proceed within the appropriate time window, with consideration of any contraindications.

Activated charcoal dosing is based on weight, but there is a safety cap for adults. In practice you determine the dose from the patient’s body weight, but you never exceed the fixed adult maximum single dose. That cap exists because larger volumes raise the risk of vomiting and aspiration, and beyond a certain amount additional charcoal doesn’t provide extra adsorption of toxins. So, the correct approach is to use the weight-based calculation only up to that adult maximum. If the weight would suggest more, you administer the cap amount instead. The smaller doses risk under-treating, while doses above the cap bring higher risk without additional benefit. Administer the charcoal as a slurry with water and proceed within the appropriate time window, with consideration of any contraindications.