A change in drug e.g. to a different type of antidepressants, or change in dose may be necessary in extreme cases. Your doctor can arrange for you to see a dietician. The tricyclics are know to affect all three stages in some people. Lack of desire and delayed orgasm is known to occur, although the opposite has been reported rarely as well. If this does seem to have happened, you should discuss this with your doctor, as a change in dose, timing or drug may help minimise any problem.
Any problem is reversible.
These drugs may make you feel drowsy. You should be careful as they may affect your reflexes reaction times. They are not, however, sleeping tablets, although if you take them at night they may help you get to sleep. You should avoid alcohol while taking these drugs as it may make you feel more sleepy. This is particularly important if you need to drive or operate machinery and you must seek advice on this.