Like all medicines, Cenex may cause side effects.
STOP taking Cenex and contact the doctor immediately if the patient develops any of these symptoms: An allergic reaction such as skin rash, swelling of the face, wheezing or difficult breathing.
Heart problems such as pain in the chest.
Severe stomach pain or any sign of bleeding in the stomach or intestines, such as passing black or bloodstained stools or vomiting blood.
A skin reaction such as rash, blistering or peeling of the skin.
Liver failure.
If the patient develops any of the side effects described, or if the patient has any other unusual symptoms or feelings not listed, the doctor or pharmacist must be contacted as soon as possible.