Call your doctor at once if you have:
any change in bowel habits;
little or no urination;
a metallic taste in your mouth;
signs of inflammation in your body - swollen glands, flu symptoms, easy bruising or bleeding, severe tingling or numbness, muscle weakness, upper stomach pain, jaundice (yellowing of the skin or eyes), chest pain, new or worsening cough with fever, trouble breathing; or
severe skin reaction- fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain, followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.