You should not take this medication if you are allergic to naratriptan, or if you have a history of heart disease, heart attack or stroke, angina (chest pain), blood circulation problems, ischemic bowel disease, severe liver or kidney disease, uncontrolled high blood pressure, or a headache that is not like other headaches you have had.
Do not use naratriptan within 24 hours before or after using another migraine headache medicine, including almotriptan (Axert), eletriptan (Relpax), frovatriptan (Frova), rizatriptan (Maxalt), 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).
Before taking naratriptan, tell your doctor if you have liver or kidney disease, 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 naratriptan, 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).
Naratriptan will only treat a headache that has already begun. It will not prevent headaches or reduce the number of attacks.
If your headache does not go away after taking a naratriptan tablet, or if the headache goes away and then comes back, call your doctor before taking a second tablet. You must wait at least four (4) hours after you have taken the first tablet before you take the second tablet. Do not take more than two (2) naratriptan tablets in 24 hours.
If your symptoms have not improved after taking 2 tablets in 24 hours, contact your doctor before taking any more tablets.