Taking other medicines: Inform the doctor or pharmacist if taking, or have recently taken, any other medicines, even those not prescribed.
Talk to the doctor before starting intake of Myfenax if: Taking any medicines containing azathioprine or other immunosuppressive agents (sometimes given to patients after a transplant operation), cholestyramine (used to treat patients with high blood cholesterol), rifampicin (antibiotic), antacids, phosphate binders (used in patients with chronic renal kidney failure to reduce the absorption of phosphate), or any other medicines (including those that can be bought without a prescription); Receiving vaccines (live vaccines).
Taking Myfenax with food and drink: Taking food and drink has no influence on the treatment with Myfenax.