Uses
Captopril is
used to treat high blood pressure (hypertension). Lowering high
blood pressure helps prevent strokes, heart attacks, and kidney problems.
It is also used to treat heart failure, protect the kidneys from
harm due to diabetes, and to improve survival after a heart attack.
Captopril
is an ACE inhibitor and works by relaxing blood vessels so
that blood can flow more easily.
Side Effects
Dizziness, lightheadedness,
or loss of taste may occur as your body adjusts to the medication.
Dry cough may also occur. If any of these effects persist or worsen,
tell your doctor or pharmacist promptly.
Remember
that your doctor has prescribed this medication because he or she has judged
that the benefit to you is greater than the risk of side effects. Many people
using this medication do not have serious side effects.
Tell
your doctor right away if any of these unlikely but serious side effects
occur: fainting, fast heartbeat, symptoms of a high potassium blood level
(such as muscle weakness, slow/irregular heartbeat), signs of infection
(such as fever, chills, persistent sore throat), cloudy urine.
Although captopril may
be used to prevent kidney problems or treat people who have kidney
problems, it may also rarely cause serious kidney problems or make them worse.
Your doctor will check your kidney function while you are taking captopril.
Tell your doctor right away if you have any signs of kidney problems such as a
change in the amount of urine.
This
drug may rarely cause serious (possibly fatal) liver problems. Tell your
doctor right away if you notice any of the following rare but serious side
effects: yellowing eyes/skin, dark urine, severe stomach/abdominal
pain, persistent nausea/vomiting.
A
very serious allergic reaction to this drug is rare. However, get
medical help right away if you notice any of the following symptoms of a
serious allergic reaction: rash, itching/swelling (especially of
the face/tongue/throat), severe dizziness, trouble breathing.
This
is not a complete list of possible side effects. If you notice other effects
not listed above, contact your doctor or pharmacist.
Precautions
Before
taking captopril, tell your doctor or pharmacist if you are
allergic to it; or to other ACE inhibitors (such as lisinopril);
or if you have any other allergies. This product may contain inactive
ingredients, which can cause allergic reactions or other problems. Talk to your
pharmacist for more details.
Before
using this medication, tell your doctor or pharmacist your medical
history, especially of: history of an allergic reaction that included
swelling of the face/lips/tongue/throat (angioedema), blood filtering
procedures (such as LDL apheresis, dialysis), collagen vascular
disease (such as lupus, scleroderma), high level of potassium in
the blood.
This
drug may make you dizzy. Alcohol or marijuana (cannabis) can make you
more dizzy. Do not drive, use machinery, or do anything that needs alertness
until you can do it safely. Limit alcoholic beverages. Talk to your
doctor if you are using marijuana (cannabis).
To
reduce the risk of dizziness and lightheadedness, get up slowly
when rising from a sitting or lying position.
Too
much sweating, diarrhea, or vomiting may cause loss of too
much body water (dehydration) and increase your risk of lightheadedness.
Report prolonged diarrhea or vomiting to your doctor. Be sure to
drink enough fluids to prevent dehydration unless your doctor directs you
otherwise.
Before
having surgery, tell your doctor or dentist about all the products
you use (including prescription drugs, nonprescription drugs, and herbal
products).
This
product may increase your potassium levels. Before using potassium supplements or
salt substitutes that contain potassium, consult your doctor or pharmacist.
Older
adults may be more sensitive to the side effects of this drug, including
dizziness and increases in potassium level.
This
medication is not recommended for use during pregnancy. It may harm an
unborn baby. Consult your doctor for more details. (See also Warning section.)
This
medication passes into breast milk but is unlikely to harm a
nursing infant. Consult your doctor before breast-feeding.