Moderate. These medicines may cause some risk when taken together. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.
How the interaction occurs:
The cause of the interaction is not known. Propranolol may increase the effects of rizatriptan.
What might happen:
Your blood level of rizatriptan may increase.
What you should do about this interaction:
If your doctor prescribes these medicines together, it may be necessary to adjust your dose of rizatriptan. Your healthcare professionals (e.g. doctor or pharmacist) may already be aware of this interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicines before checking with them first.
1.Maxalt (rizatriptan) US prescribing information. Merck & Co., Inc. December, 2011.
2.Goldberg MR, Sciberras D, De Smet M, Lowry R, Tomasko L, Lee Y, Olah TV, Zhao J, Vyas KP, Halpin R, Kari PH, James I. Influence of beta-adrenoceptor antagonists on the pharmacokinetics of rizatriptan, a 5-HT1B/1D agonist: differential effects of propranolol, nadolol and metoprolol. Br J Clin Pharmacol 2001 Jul;52(1):69-76.
3.Fleishaker JC, Sisson TA, Carel BJ, Azie NE. Lack of pharmacokinetic interaction between the antimigraine compound, almotriptan, and propranolol in healthy volunteers. Cephalalgia 2001 Feb;21(1):61-5.
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