I have taken only 9 capsule of acctune 20 mg & have already stopped, but I read about impotence in men and I'm really worried?

It's understandable to be concerned about potential side effects of any medication. Accutane (isotretinoin) is a powerful medication used to treat severe acne, and like any medication, it can have side effects. However, the risk of experiencing side effects like impotence is generally considered low, especially with a short course like the one you described (9 capsules).

Most common side effects of isotretinoin include dryness of the skin, lips, and eyes, as well as potential changes in mood. Long-term side effects are more often associated with prolonged use. If you have stopped taking the medication and are not experiencing any symptoms, it is unlikely that you will develop side effects later.

If you have specific concerns or are experiencing any troubling symptoms, it is always best to consult with your healthcare provider. They can provide personalized advice and reassurance based on your medical history and current health status.