Before taking methylergonovine, tell your doctor or pharmacist if you are allergic to it; or to similar ergot alkaloids (such as ergonovine); 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: kidney disease, liver disease, high blood pressure, heart disease (such as venoatrial shunts, mitral valve stenosis, chest pain, recent heart attack), diabetes, high cholesterol, smoking/tobacco use, blood vessel disease (such as Raynaud's disease), complications during pregnancy (such as preeclampsia, eclampsia).

This drug may make you dizzy. Alcohol or marijuana (cannabis) can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

This medication must not be used during pregnancy. It may harm an unborn baby. Consult your doctor for more details.

This medication may decrease the amount of breast milk. Methylergonovine passes into breast milk in small amounts and may have undesirable effects on a nursing infant. Consult your doctor before breastfeeding.