SIDE EFFECTS: Dizzinesss, headache, diarrhea, back pain may occur. If any of these effect persist or worsne, notify your doctor or pharacist promptly. Tell you doctor immediately of any of these serious side effects occur: chest pain, fatigue, stomach pain. A serious allergic reaction to this drug is unlikely, but see immediate medical attention if it occurs. Symtoms of a serious allergic reaction include: rash, itching, swelling, dizziness, trouble breathing. If you notice other effects not listed above, contact your doctor or pharacist.