A nurse in an outpatient clinic is providing education to a client who has alcohol use disorder and a prescription for disulfiram. Which of the following statements should the nurse include in the teaching?

A. "Once you stop taking disulfiram, you may resume alcohol consumption.": While alcohol can be consumed after discontinuing disulfiram, this does not address the ongoing risk during therapy. Clients must understand that alcohol consumption while on disulfiram can cause severe reactions. B. "You must avoid even small amounts of alcohol while taking disulfiram.": Disulfiram inhibits aldehyde dehydrogenase, causing accumulation of acetaldehyde when alcohol is consumed. Even small amounts of alcohol can trigger nausea, vomiting, hypotension, and flushing, so strict avoidance is essential. C. "It is common for you to develop an intractable headache when you first take disulfiram.": Headaches are not a typical expected reaction when initiating disulfiram. Adverse effects mainly occur if alcohol is consumed concurrently, rather than spontaneously from the medication itself. D. "Disulfiram works by changing the way that alcohol tastes.": Disulfiram does not alter the taste of alcohol; it produces a physiological reaction when alcohol is ingested, serving as a deterrent rather than changing flavor perception.