Which statement by a client about isoniazid indicates the need for further teaching?

The statement regarding the use of isoniazid that indicates a need for further teaching is the assertion that the client can stop the medication if they experience fatigue and nausea. Isoniazid is an essential medication for treating tuberculosis, and it is crucial that clients understand the importance of adhering to the prescribed treatment regimen for the full duration, even if they experience side effects.

Fatigue and nausea can be common side effects when taking isoniazid, but stopping the medication prematurely could lead to inadequate treatment of the infection, potentially leading to drug resistance or treatment failure. Clients should be educated about managing side effects and encouraged to report them to their healthcare provider rather than discontinuing their medication without consultation.

The other statements reflect accurate understanding of isoniazid therapy. Taking the medication for the prescribed duration is crucial for treatment efficacy. Avoiding alcohol is important because it can increase the risk of liver toxicity associated with isoniazid. Reporting signs of liver problems, such as jaundice, dark urine, or persistent nausea and vomiting, is also essential for ensuring safety, as isoniazid can impact liver function.