Final answer:
Rifampin can cause a harmless orange-red coloration of body fluids such as urine, which patients should be informed about. Clients should also be advised to avoid prolonged sun exposure during rifampin treatment.
Step-by-step explanation:
When instructing a client who is beginning treatment with rifampin for suspected pulmonary tuberculosis, it is crucial to discuss potential side effects and how the medication may affect their daily life. One key piece of information to include is that rifampin can cause a harmless orange-red coloration of body fluids, including urine, sweat, and tears. This is a normal side effect and is not a cause for alarm; however, patients should be aware as it can stain clothing and contact lenses.
Moreover, rifampin can increase sensitivity to sunlight, so advising the client to avoid prolonged exposure to the sun and protect themselves with sunscreen or clothing when outside is essential. The client does not need to check their radial pulse before taking the drug, as would be suggested for certain cardiovascular medications. Additionally, staying upright for 30 minutes after taking the drug is not specifically required for rifampin, but may be advised for medications that can cause esophageal irritation, such as bisphosphonates.