Angina is a type of chest pain that occurs when there
is not enough blood flow to the heart muscle. This is often a result of
narrowed blood vessels, usually caused by hardening of the arteries
(atherosclerosis). If you have angina, you and your health professional may
have developed a plan for you to use to treat your angina at home. When angina
starts, follow that plan. If you have any questions about your home treatment
plan, call your health professional.
Many health professionals prescribe nitroglycerin to relieve the pain
of angina. The usual method for taking nitroglycerin tablets is explained
below. If your health professional has prescribed and instructed you to use
nitroglycerin spray or his or her instructions differ from those below, follow
the guidelines your health professional has given you.
If you are taking nitroglycerin sublingual tablets or spray for acute
chest pain, you should carry the tablets and spray with you at all times. Sit
down when an acute attack occurs. The medication starts to work within 2
minutes and goes on working for up to 30 minutes.
Nitroglycerin tablets
- Sit down before taking nitroglycerin because
this medication can lower your blood pressure and make you feel dizzy or
lightheaded.
- Place one tablet under your tongue (sublingual), let
it dissolve, and rest for 5 minutes. If after 5 minutes the pain does not
improve or gets worse, call
911 or other
emergency services immediately.
- After calling
911, continue to stay on the phone with
the emergency operator; he or she will give you further instructions.
Nitroglycerin tablets should be replaced every 3 to 6 months. Old
tablets may not work effectively. Store nitroglycerin in a brown or opaque
airtight, glass container that you cannot see through and keep away from heat
or moisture.
Nitroglycerin sprays
- Do not shake the spray container. Hold it
upright with the opening of the spray mechanism as close as possible to your
opened mouth.
- Press the spray mechanism with your forefinger to
release the spray. Spray the nitroglycerin onto or under your tongue and close
your mouth immediately. Do not inhale or swallow the spray.
- Rest
for 3 to 5 minutes. If after to 3 to 5 minutes the pain does not improve or
gets worse, call 911 or other emergency services immediately.
- After
calling 911, continue to stay on the phone
with the emergency operator; he or she will give you further instructions.
A nitroglycerin spray may last up to 2 years before it expires.
Replace nitroglycerin spray according to the expiration date on the bottle. Old
spray may not work effectively. Store your spray in the original container and
keep it away from heat or moisture.