You should not take this medication if you are allergic to rizatriptan, or if you have a history of heart disease, angina (chest pain), blood circulation problems, ischemic bowel disease, uncontrolled high blood pressure, or history of a heart attack or stroke.
Do not use rizatriptan within 24 hours before or after using another migraine headache medicine, including almotriptan (Axert), eletriptan (Relpax), frovatriptan (Frova), naratriptan (Amerge), sumatriptan (Imitrex, Treximet), zolmitriptan (Zomig), or ergot medicine such as dihydroergotamine (D.H.E. 45, Migranal), ergotamine (Ergomar, Ergostat, Cafergot, Ercaf, Wigraine), ergonovine (Ergotrate), methylergonovine (Methergine), or methysergide (Sansert).
Do not use rizatriptan if you have taken a monoamine oxidase inhibitor (MAOI) such as isocarboxazid (Marplan), tranylcypromine (Parnate), rasagiline (Azilect), selegiline (Eldepryl, Emsam), or phenelzine (Nardil) in the past 14 days.
Before taking rizatriptan, tell your doctor if you have liver disease, kidney disease (or if you are on dialysis), high blood pressure, a heart rhythm disorder, coronary artery disease, or risk factors for coronary artery disease (such as diabetes, menopause, smoking, being overweight, having high blood pressure or high cholesterol, having a family history of coronary artery disease, being older than 40 and a man, or being a woman who has had a hysterectomy).
Before taking rizatriptan, tell your doctor if you are also taking an antidepressant such as citalopram (Celexa), duloxetine (Cymbalta), escitalopram (Lexapro), fluoxetine (Prozac, Sarafem), fluvoxamine (Luvox), paroxetine (Paxil), sertraline (Zoloft), or venlafaxine (Effexor).
Rizatriptan will only treat a headache that has already begun. It will not prevent headaches or reduce the number of attacks.
After taking a rizatriptan tablet, you must wait two (2) hours before taking a second tablet. Do not take more than 30 mg of rizatriptan in 24 hours.