Please check your internet connection and try again.
# Tamsulosin
## Overview
Tamsulosin is an alpha-1 adrenergic receptor antagonist.
## Primary Indications
* Benign prostatic hyperplasia (BPH) - Alleviates symptoms of urinary obstruction.
* Ureteral stones - Facilitates stone passage.
## Adult Dosing
* **BPH:** 0.4 mg orally once daily. May increase to 0.8 mg orally once daily after 2-4 weeks if not adequately effective.
* **Ureteral stones:** 0.4 mg orally once daily. Dose may be adjusted based on stone size and location per local protocol.
## Pediatric Dosing
There is no established pediatric indication for tamsulosin.
## Dose Adjustments
No dose adjustment is typically required for hepatic or renal impairment except in severe renal impairment where caution is advised.
## Contraindications
* Known hypersensitivity to tamsulosin or its components.
## Adverse Effects
Common: Dizziness, somnolence, insomnia, abnormal ejaculation (including retrograde ejaculation and anejaculation), decreased libido, orthostatic hypotension.
Less Common: Headache, nausea, blurred vision, rash.
## Key Drug Interactions
* **CYP3A4 inhibitors (e.g., ketoconazole, ritonavir):** May increase tamsulosin exposure and risk of adverse effects. Monitor for adverse effects.
* **Alpha-blockers:** Additive hypotensive effects. Avoid concurrent use.
* **Antihypertensives:** May potentiate orthostatic hypotension. Monitor blood pressure.
## Monitoring
* Blood pressure, especially upon initiation and dose increase.
* Urinary symptom assessment.
* Monitor for signs and symptoms of orthostatic hypotension.
## Clinical Pearls
* For BPH, administer the dose irrespective of meals.
* For BPH, the 0.4 mg dose is typically taken in the morning. The 0.8 mg dose is also typically taken once daily.
* Caution patients about potential for dizziness and orthostatic hypotension, advising them to avoid activities requiring mental alertness until they know how the medication affects them.
* Tamsulosin may affect cataract surgery outcomes (Intraoperative Floppy Iris Syndrome). Inform ophthalmologists prior to surgery.
***
**Disclaimer:** This information is intended for clinical professionals and does not substitute for a comprehensive review of the drug's full prescribing information. Always verify current product labeling and guidelines.
