Rare side effects (greater than 1 patient out of 10,000, less than 1 patient out of 1,000) Numbness, tingling and or burning sensation, altered heart rate, palpitations (you feel your heart beats harder or in an irregular way), feeling faint, increased blood pressure, peripheral coldness, breathing problems, cough, dry throat, difficulty in swallowing, rash, redness of the skin, joint pain, pain on the side(s), neck pain, muscle cramp, fever, muscle stiffness and abnormal electrocardiogram.