Terazosin Side Effects
Medically reviewed by Drugs.com. Last updated on Sep 18, 2020.
Commonly reported side effects of terazosin include: dizziness. Other side effects include: asthenia, headache, and peripheral edema. See below for a comprehensive list of adverse effects.
For the Consumer
Applies to terazosin: oral capsule
Side effects requiring immediate medical attention
Along with its needed effects, terazosin may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor as soon as possible if any of the following side effects occur while taking terazosin:
- Chest pain
- dizziness or lightheadedness when getting up from a lying or sitting position
- fainting (sudden)
- fast or irregular heartbeat
- pounding heartbeat
- shortness of breath
- swelling of feet or lower legs
- Weight gain
Side effects not requiring immediate medical attention
Some side effects of terazosin may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.
Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
- unusual tiredness or weakness
- Back or joint pain
- blurred vision
- nausea and vomiting
- stuffy nose
For Healthcare Professionals
Applies to terazosin: oral capsule, oral tablet
Asthenia, blurred vision, dizziness, impotence, nasal congestion/rhinitis, nausea, somnolence, palpitations, peripheral edema, and postural hypotension were significantly more common (p-value less than or equal to 0.05) in patients receiving this drug than in patients receiving placebo.[Ref]
Very common (10% or more): Dizziness (up to 19.3%), headache (up to 16.2%)
Very common (10% or more): Asthenia (up to 11.3%)
Common (1% to 10%): Flu syndrome, vertigo, peripheral edema
Uncommon (0.1% to 1%): Edema
Common (1% to 10%): Postural hypotension, palpitations, tachycardia
Uncommon (0.1% to 1%): Hypotension
Frequency not reported: Arrhythmia, vasodilation
Common (1% to 10%): Dyspnea, nasal congestion/rhinitis, sinusitis
Common (1% to 10%): Back pain, pain-extremities
Common (1% to 10%): Impotence, urinary tract infection
Common (1% to 10%): Nervousness
Uncommon (0.1% to 1%): Depression, libido decreased
Common (1% to 10%): Nausea
Common (1% to 10%): Blurred vision/amblyopia
Uncommon (0.1% to 1%): Weight gain
Frequency not reported: Gout[Ref]
1. "Product Information. Hytrin (terazosin)." Abbott Pharmaceutical, Abbott Park, IL.
More about terazosin
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- Drug class: antiadrenergic agents, peripherally acting
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Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.