Final answer:
Patient teaching for nilutamide should inform them of potential irreversible side effects such as impaired heart function, testicular atrophy, and prostate enlargement. Some side effects may be treated surgically but permanent impacts are possible.
Step-by-step explanation:
When educating a patient about nilutamide, it's important to discuss potential side effects. These may include impaired heart function, testicular atrophy, insomnia, depression, and prostate enlargement. Patients must be informed that these side effects can be severe and irreversible. While some conditions may be managed or treated surgically, the possibility of long-term and permanent effects should be clearly communicated.