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       # For Heart Attack
       
       If you suspect someone is having a heart attack, give 1 tablet of
       aspirin right away (300 to 325 mg).  Ask the person to chew it up and
       swallow it with water.  Even if you are not sure the person is having
       a heart attack, aspirin will do no harm. On the way to a hospital,
       give nitroglycerin if you have it.
       
       You can also give morphine to help with the pain and fear.
       
 (DIR) medicines for pain
       
       # Nitroglycerin (Glyceryl trinitrate)
       
       Nitroglycerin is used to treat chest pain from a heart attack.  It
       helps to widen the blood vessels making it easier for the heart to
       pump blood.
       
       ## Important!
       
       Do not give nitroglycerin to someone with low blood pressure or who
       has taken sildenafil (Viagra) in the last 24 hours.  This combination
       of medicines can cause blood pressure to drop dangerously low, and
       can be deadly.
       
       ## Side effects
       
       May cause severe headache, feeling hot, or dizziness.
       
       ## How to use
       
 (IMG) Pill
       
       The person should sit or lie down, not stand up, in case they get
       dizzy.
       
       Give 1/2 mg (0.5 mg) tablet dissolved under the tongue, no more than
       3 times, waiting 5 minutes between each tablet.  If the chest pain
       and other signs go away, another tablet is not needed.  Do not chew
       or swallow nitroglycerin tablets.  As the tablet dissolves under the
       tongue, it tingles or even burns a little.
       
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