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USES:
This medication is a nitrate drug. It is used to prevent chest
pain (angina) and reduce strain on the heart in patients with
heart disease (coronary artery disease). Isosorbide mononitrate
relaxes and widens blood vessels so blood can flow more easily.
This medication will not relieve chest pain once it occurs. It is
also not intended to be taken just before certain activities
(e.g., exercise, sexual intercourse) to prevent chest pain. Other
medications may be needed. Consult your doctor for details.
OTHER USES:
This medication may also be used in addition to other drugs to
improve the symptoms of congestive heart failure (e.g., trouble
breathing).
HOW TO USE:
Take this medication by mouth usually twice daily, or as directed
by your doctor. Take the first dose of the day upon awakening and
the second dose 7 hours later. It is important not to change the
times you take this medication unless directed by your doctor.
During treatment, the long time period between the second dose on
one day and the first dose on the next day is necessary to make
sure the drug works well. Use this medication regularly in order
to get the most benefit from it. Remember to use it at the same
times each day. Do not stop taking this medication without
consulting your doctor. Some conditions may become worse when the
drug is suddenly stopped. Your dose may need to be gradually
decreased. Although unlikely, when used for an extended period,
this medication may not work as well and may require different
dosing. Contact your doctor if this medication stops working well
(worsening or more frequent chest pain).
SIDE EFFECTS:
Headache, dizziness, lightheadedness, nausea or vomiting may occur
as your body adjusts to this medication. Headache is often a sign
that this medication is working; treat it with an aspirin or
non-aspirin pain reliever as recommended by your doctor. If any of
these effects persist or worsen, notify your doctor or pharmacist
promptly. Tell your doctor immediately if any of these unlikely
but serious side effects occur: more frequent or worsening chest
pain, flushing, unusually slow or fast heartbeat, fainting. A
serious allergic reaction to this drug is unlikely, but seek
immediate medical attention if it occurs. Symptoms of a serious
allergic reaction include: rash, itching, swelling, severe
dizziness, trouble breathing. If you notice other effects not
listed above, contact your doctor or pharmacist.
OVERDOSE: If overdose is suspected, contact
your local poison control center or emergency room immediately. US
residents can call the US national poison hotline at
1-800-222-1222. Canadian residents should call their local poison
control center directly. Symptoms of overdose may include:
persistent/severe throbbing headache, fast/slow/pounding
heartbeat, fainting, trouble breathing, loss of consciousness,
seizures.
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