Mycophenolic Acid Accord (Mycophenolic Acid)

Mycophenolic Acid is used to modulate immune responses in conditions where excessive lymphocyte activity is harmful.

• Organ transplant rejection: helps prevent the immune system from attacking the transplanted organ.
• Lupus nephritis: reduces kidney inflammation caused by systemic lupus erythematosus.
• Vasculitis: diminishes inflammation of blood vessels in various autoimmune vasculitic disorders.

• Mycophenolic Acid selectively and reversibly inhibits inosine monophosphate dehydrogenase (IMPDH), a key enzyme in the de novo synthesis of guanosine nucleotides. This inhibition lowers intracellular guanosine levels, impairing DNA synthesis and proliferation of activated T and B lymphocytes, thereby exerting immunosuppressive effects without markedly affecting other cell types.

Mycophenolic Acid may cause a range of adverse reactions, which are generally categorized by frequency and severity.

Common Side Effects

• Gastrointestinal upset: nausea, vomiting, diarrhea, or abdominal pain.
• Headache: mild to moderate intensity.
• Infections: increased susceptibility to upper respiratory or urinary tract infections.
• Anemia: reduced red blood cell count causing fatigue.
• Elevated liver enzymes: mild transaminase elevations.
• Rash: mild skin irritation or itching.

Serious or Rare Side Effects

• Bone marrow suppression: severe leukopenia, neutropenia, or thrombocytopenia.
• Opportunistic infections: including fungal or viral infections such as cytomegalovirus.
• Malignancies: increased risk of lymphoproliferative disorders.
• Progressive multifocal leukoencephalopathy (PML): rare but potentially fatal brain infection.
• Hepatotoxicity: significant liver injury or hepatitis.
• Severe hypersensitivity reactions: including Stevens‑Johnson syndrome.

Before initiating therapy, clinicians should assess baseline laboratory values and monitor patients regularly.

• Monitor blood counts: check complete blood count periodically to detect bone marrow suppression.
• Assess renal function: adjust dosing in patients with impaired kidney function.
• Avoid in pregnancy: drug is contraindicated due to teratogenic risk.
• Use effective contraception: both male and female patients of reproductive potential must employ reliable birth control.
• Review concomitant medications: avoid drugs that may increase mycophenolic acid exposure.
• Store at ambient temperature: keep below 25°C in the original packaging, protect from moisture.

Mycophenolic Acid can interact with several medicines, altering its efficacy or safety profile.

Major Interactions (Avoid)

• Cyclosporine, tacrolimus: may increase mycophenolic acid exposure and toxicity.
• Live vaccines: heightened risk of severe infection due to immunosuppression.
• Antacids containing aluminum or magnesium: can reduce oral absorption of the drug.

Moderate Interactions (Monitor Closely)

• Rifampin: may lower mycophenolic acid plasma levels, reducing effectiveness.
• Warfarin: potential alteration of anticoagulant effect, requiring INR monitoring.
• Cholestyramine: may decrease drug exposure by binding in the gut.