Guanabenz (By Mouth)
Guanabenz (GWAHN-a-benz)
Treats high blood pressure.
Brand Name(s):
There may be other brand names for this medicine. When This Medicine Should Not Be Used:
You should not use this medicine if you have had an allergic reaction to guanabenz in the past. How to Use This Medicine:
Tablet
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Take this medicine exactly as your doctor ordered. Even if you feel fine your blood pressure can still be high.
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May be taken with or without food.
If a dose is missed:
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Take the missed dose as soon as you remember.
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Skip the missed dose if it is almost time for your next regular dose.
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If you miss more than two doses in row, talk with your doctor.
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You should not use two doses at the same time.
How to Store and Dispose of This Medicine:
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Store at room temperature, away from heat, moisture, and direct light.
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Keep all medicine out of the reach of children.
Drugs and Foods to Avoid:
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
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Tell your doctor if you are taking a beta blocker such as Inderal®, Tenormin®, Lopressor®, Visken®, or Corgard®.
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Avoid drinking alcohol while taking this medicine.
Warnings While Using This Medicine:
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Check with your doctor before taking if you have heart, kidney, or liver disease.
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Talk with your doctor before taking this medicine if you are pregnant or breastfeeding.
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Do not stop taking this medicine suddenly, because you may need to take smaller and smaller doses before completely stopping the medicine.
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Tell your doctor or dentist that you are taking guanabenz before having any kind of surgery.
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Guanabenz can make some people dizzy or drowsy, be careful if you drive a car or operate machinery.
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To avoid dizziness while taking this medicine, stand up slowly from a sitting or lying position.
Possible Side Effects While Using This Medicine:
Call your doctor right away if you notice any of these side effects:
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Irregular heartbeat
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Chest pain
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Trouble breathing
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Skin rash, severe itching or hives
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Severe dizziness or fainting
If you notice these less serious side effects, talk with your doctor:
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Drowsiness or dizziness
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Dry mouth, increased sweating
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Headache, nervousness, or restlessness
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Diarrhea
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Breast swelling in men
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Sexual difficulties
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Nausea or vomiting
If you notice other side effects that you think are caused by this medicine, tell your doctor.
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