Can amitiza (lubiprostone) cause tachycardia?

possibly. Amitiza (lubiprostone) has active ingredients of Lubiprostone commonly reported side effects of Amitiza (lubiprostone) include breathing difficulty, nausea, chest pain, pain, constipation. Tachycardia tachycardia has been reported by people with high blood pressure, depression, schizophrenia, pain, and osteoporosis who use this drug. Advise your physician of any adverse reactions.
Not listed. Tachycardia does not appear to be listed on its side effect profile. With that said, it's up to you and your physician to determine whether this is occurring with the medication. Medications behave differently from individual to individual. Sometimes side effects are not determined until after the medication has been out on the market a while. See your doctor to determine cause of tachycardia.