SIDE EFFECTS: See also Warning section. Constipation, nausea, headache, diarrhea, vomiting, stomach upset, gas, tremor, or trouble sleeping may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: unusual tiredness, fast/irregular heartbeat, easy bleeding/bruising, swelling of the feet or ankles. Get medical help right away if you have any very serious side effects, including: stomach/abdominal pain that doesn't go away, black stools, vomit that looks like coffee grounds, chest pain, shortness of breath/rapid breathing. This medication may increase your risk of getting a rare but very serious (possibly fatal) brain infection (progressive multifocal leukoencephalopathy-PML). Get medical help right away if you have any of these side effects: clumsiness, loss of coordination/balance, weakness, sudden change in your thinking (such as confusion, difficulty concentrating, memory loss), difficulty talking/walking, seizure, vision changes. A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

PRECAUTIONS: See also Warning section. Before taking mycophenolate mofetil, tell your doctor or pharmacist if you are allergic to it; or to mycophenolic acid; or to mycophenolate sodium; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using this medication, tell your doctor or pharmacist your medical history, especially of: cancer, liver disease (such as hepatitis B, hepatitis C), kidney disease, current/past infections (such as herpes, shingles), stomach/intestinal problems (such as ulcers), rare genetic disorders (such as Lesch-Nyhan or Kelley-Seegmiller syndromes). This medication may contain aspartame. If you have phenylketonuria (PKU) or any other condition that requires you to limit/avoid aspartame (or phenylalanine) in your diet, ask your doctor or pharmacist about using this medication safely. Mycophenolate can make you more likely to get infections or may worsen any current infections. Avoid contact with people who have infections that may spread to others (such as chickenpox, measles, flu). Consult your doctor if you have been exposed to an infection or for more details. Do not have immunizations/vaccinations without the consent of your doctor. Avoid contact with people who have recently received live vaccines (such as flu vaccine inhaled through the nose). To lower the chance of getting cut, bruised, or injured, use caution with sharp objects like razors and nail cutters, and avoid activities such as contact sports. Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). Since this drug can be absorbed through the skin and lungs and may harm an unborn baby, women who are pregnant or who may become pregnant should not handle this medication or breathe the powder from this medication before it is mixed into a suspension. This medication is not recommended for use during pregnancy. It may harm an unborn baby. It is important to prevent pregnancy while taking this medication and for 3 months after stopping it. If you become pregnant or think you may be pregnant, tell your doctor right away. Women of childbearing age should talk to their doctor(s) about the benefits and risks (such as miscarriage). Women of childbearing age should have a pregnancy test before starting this medication, after 8 to 10 days on treatment, and during routine follow-up visits. Women of childbearing age should ask about using reliable forms of birth control during treatment and for 3 months after stopping treatment. Males with female partners of childbearing age should use reliable forms of birth control while using this medication and for 3 months after stopping treatment. See also Drug Interactions section. It is unknown if this drug passes into breast milk and it may have undesirable effects on a nursing infant. Breast-feeding while using this drug is not recommended. Consult your doctor before breast-feeding.

DRUG INTERACTIONS: See also How to Use section. Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Some products that may interact with this drug include: azathioprine, rifampin, other drugs that weaken the immune system/increase the risk of infection (such as natalizumab, rituximab). This medication may decrease the effectiveness of hormonal birth control such as pills, patch, or ring. This could cause pregnancy. If you are using hormonal birth control, you should use an additional non-hormonal form of birth control while using this medication. Discuss your options with your doctor or pharmacist. Also tell your doctor if you have any new spotting or breakthrough bleeding, because these may be signs that your birth control is not working well.

OVERDOSE: If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.