What should the nurse teach a client starting a 6-month course of isoniazid (INH)?

The appropriate teaching for a client starting a 6-month course of isoniazid (INH) includes the importance of monitoring for signs of liver toxicity, which can manifest as yellowing of the eyes or skin, known as jaundice. This is a critical sign that the liver may be experiencing damage, as isoniazid can impact liver function, especially in individuals with pre-existing liver conditions or those who consume alcohol. Reporting any signs of jaundice immediately to a healthcare provider is essential for timely intervention, which could prevent serious complications.

In contrast, the other options do not align with the safe practices associated with isoniazid therapy. For instance, consuming alcohol, even in small amounts, can increase the risk of liver toxicity when taking isoniazid. Additionally, increasing intake of Swiss or aged cheeses is not advisable as these foods are high in tyramine, which could lead to adverse effects when combined with certain medications, particularly monoamine oxidase inhibitors. Finally, while vitamin supplements are generally not contraindicated, it is important for clients to discuss any supplements they consider taking with their healthcare provider, as some could interact with their treatment regimen or affect liver health. Therefore, emphasizing the need to recognize and report jaundice is paramount for