A client who is an alcoholic receives a prescription for disulfiram 500 mg by mouth (PO) daily. Which instruction should the nurse provide to this client?

A. Clients taking disulfiram must completely avoid alcohol, as even small amounts can cause severe reactions (e.g., nausea, vomiting, flushing, hypotension). There is no safe amount of alcohol to consume while on this medication. B. Alcohol consumption must be completely avoided, not just limited, while taking disulfiram, as the drug works by causing an aversive reaction when alcohol is ingested. C. Disulfiram should not be started immediately if alcohol is still in the system. It must be initiated at least 12–48 hours after the last drink to prevent severe reactions. D. The client should begin taking disulfiram at least 48 hours after the last alcohol intake to reduce the risk of adverse effects. The medication is taken daily, and alcohol must be strictly avoided, including in hidden sources like mouthwash and cooking extracts.