Common amitriptyline side effects may include: constipation, diarrhea;nausea, vomiting, upset stomach;mouth pain, unusual taste, black tongue;appetite or weight changes;urinating less than usual;itching or rash;breast swelling (in men or women); or.decreased sex drive, impotence, or difficulty having an orgasm. I think u should also consult a psychologist for better mental health.Only medicine some time is Not sufficient to cure a disease,then counselling is also help it.