Do not use Ritalin if you have used an MAO inhibitor such as isocarboxazid (Marplan), tranylcypromine (Parnate), phenelzine (Nardil), rasagiline (Azilect), or selegiline (Eldepryl, Emsam) within the past 14 days. Serious, life-threatening side effects can occur if you use Ritalin before the MAO inhibitor has cleared from your body. Do not use Ritalin if you are allergic to methylphenidate or if you have glaucoma, overactive thyroid, severe high blood pressure, tics or Tourette's syndrome, angina, heart failure, heart rhythm disorder, recent heart attack, a hereditary condition such as fructose intolerance, glucose-galactose malabsorption, or sucrase-isomaltase deficiency, or severe anxiety, tension, or agitation. Buy Ritalin
Ritalin may be habit-forming and should be used only by the person it was prescribed for. Ritalin should never be shared with another person, especially someone who has a history of drug abuse or addiction. Keep the medication in a secure place where others cannot get to it.