Summary

Commonly reported side effects of tamsulosin include: dizziness, nasal congestion, paranasal sinus congestion, rhinitis, rhinorrhea, and seasonal allergic rhinitis. Other side effects include: drowsiness. Continue reading for a comprehensive list of adverse effects.

Applies to tamsulosin: oral capsules.

Side effects include:

Headache, infection, asthenia, back pain, chest pain, dizziness, somnolence, insomnia, decreased libido, rhinitis, pharyngitis, increased cough, sinusitis, diarrhea, nausea, tooth disorder, abnormal ejaculation, blurred vision.

For Healthcare Professionals

Applies to tamsulosin: oral capsule.

General

The most commonly reported side effects were abnormal ejaculation, influenza-like symptoms, headache, dizziness, and rhinitis.^[Ref]

Immunologic

Very common (10% or more): Infection (up to 10.8%)

Uncommon (0.1% to 1%): Flu like symptoms

Rare (less than 0.1%): Angioedema^[Ref]

Cardiovascular

Common (1% to 10%): Chest pain

Uncommon (0.1% to 1%): Orthostatic hypotension

Rare (less than 0.1%): Syncope

Postmarketing reports: Palpitations, hypotension, atrial fibrillation, arrhythmia, tachycardia^[Ref]

Dermatologic

Uncommon (0.1% to 1%): Rash, pruritus, urticaria

Postmarketing reports: Stevens-Johnson syndrome, erythema multiforme, exfoliative dermatitis, skin desquamation^[Ref]

Nervous system

Very common (10% or more): Headache (21%), dizziness (17%)

Common (1% to 10%): Somnolence, insomnia

Frequency not reported: Vertigo^[Ref]

Genitourinary

Very common (10% or more): Abnormal ejaculation (18%)

Common (1% to 10%): Ejaculation disorders (e.g., retrograde ejaculation, ejaculation failure), decreased libido

Uncommon (0.1% to 1%): Semen volume reduced, ejaculation delayed

Postmarketing reports: Priapism^[Ref]

Respiratory

Very common (10% or more): Rhinitis (up to 17.9%)

Common (1% to 10%): Pharyngitis, Increased cough, sinusitis

Uncommon (0.1% to 1%): Nasal congestion

Postmarketing reports: Dyspnea, epistaxis^[Ref]

Musculoskeletal

Common (1% to 10%): Back pain^[Ref]

Gastrointestinal

Common (1% to 10%): Diarrhea, nausea, tooth disorder

Uncommon (0.1% to 1%): Constipation, vomiting

Frequency not reported: Dry mouth^[Ref]

Ocular

Common (1% to 10%): Blurred vision

Postmarketing reports: Visual impairment, intraoperative Floppy Iris Syndrome (IFIS)^[Ref]

Other

Common (1% to 10%): Asthenia

Uncommon (0.1% to 1%): Fatigue^[Ref]

Psychiatric

Common (1% to 10%): Insomnia^[Ref]