Tell your doctor immediately, or go to the casualty department at your nearest hospital: • Chest tightness, wheezing, trouble swallowing or breathing • Swelling of the face, throat, hands, or feet • Feeling nervous or anxious, dizziness, throbbing sensations, sudden reddening of the skin and/ or a warm feeling • Severe rash, itching, or hives (elevated patches of red or pale skin that often itch) • Serious side effects