Certican 0.5 Tablet is used for the prevention of organ rejection in transplant patients. It regulates the bodys immune response, so the body can accept the new organ. It is also used in combination with other medicines to treat cancers of breast, pancreas, lungs, and kidney.Certican 0.5 Tablet must be taken in a dose and duration as per the prescription. It can be taken with or without food but make sure to take it at about the same time every day. An overdose of this medicine may have serious side effects on the body.The common side effects of this medicine are weakness, sinus inflammation, infection, fever, cough, etc. If any of the side effects persist or bother you, consult the doctor immediately. Inform the doctor immediately if you experience any allergic reactions (rash, shortness of breath, coughing, swelling, etc.). Always seek medical advice if you have increased thirst or increased frequency of urination, suffer from shortness of breath, cough or fever, or need to receive any vaccination after taking this medication.