Injection site reactions (pain, swelling, redness) are common side effects of this medicine. If these bother you or appear serious, let your doctor know. There may be ways of reducing or preventing them. Regular blood tests are required to check your blood cells and serum methotrexate concentration in blood.
Before taking it, tell your doctor if have seizures, liver, or kidney problems or are taking any medicines to treat infections. Many other medicines can affect, or be affected by, this medicine so let your healthcare team know all medications you are using, especially phenytoin for your seizures. To make sure it is safe for you, let your doctor know if you are pregnant or breastfeeding before taking this medicine.