This information is generalized and not intended as specific medical advice. Consult your healthcare professional before taking or discontinuing any drug, changing your diet or commencing any course of treatment.
Very important. A change in your diet, medicine, or dosage may be necessary. Promptly consult your doctor or pharmacist.
How the interaction occurs:
Grapefruit juice may increase the amount of ergot derivative in your blood.
What might happen:
When ergot derivatives are taken with grapefruit juice, the grapefruit juice may cause the ergot derivative to build up in your body. This increased amount of ergot derivative may affect blood flow in your body causing potentially serious effects.
What you should do about this interaction:
While you are taking this medicine, you should avoid eating grapefruit or drinking grapefruit juice. You may choose an alternative citrus beverage (such as orange juice). In the event that you are instructed by a healthcare professional (e.g., doctor, pharmacist, or dietitian) to eat grapefruit or drink grapefruit juice you should discuss with your doctor the effects of grapefruit on the blood levels of this medicine. These effects can occur even if grapefruit is not consumed at the same time of the ergot derivative dose. This interaction may occur at any time in your treatment with an ergot derivative if grapefruit or grapefruit juice is consumed.If you experience chest pain; change in heartbeat; numbness and tingling of hands, feet, or face; pain in arms, legs, or lower back; itching; or other symptoms, contact your doctor.Your healthcare professionals may already be aware of this interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.
1.Bailey DG, Dresser GK. Interactions between grapefruit juice and cardiovascular drugs. Am J Cardiovasc Drugs 2004;4(5):281-97.
2.D. H. E. 45 (dihydroergotamine mesylate) US prescribing information. Xcel Pharmaceuticals September, 2002.
3.Cafergot (ergotamine tartrate and caffeine) Suppositories US prescribing information. Novartis Pharmaceuticals Corporation June, 2002.
4.Methergine (methylergonovine maleate) US prescribing information. Novartis Pharmaceuticals Corporation June, 2012.