Tamsulosin
chemical compound
Tamsulosin, sold under the brand name Flomax among others, is a medication used to treat symptomatic benign prostatic hyperplasia and chronic prostatitis. It is also used to help with the passage of kidney stones. The evidence for benefit with a kidney stone is better when the stone is larger. Tamsulosin is taken by mouth.
Common side effects include dizziness, headache, insomnia, nausea, blurry vision, and sexual problems. Other side effects may include feeling lightheaded with standing due to changes in blood pressure, and angioedema. Tamsulosin is an alpha blocker and works by relaxing muscles in the prostate. Specifically it is an α1-adrenergic receptor blocker.
Tamsulosin was approved for medical use in the United States in 1997. It is available as a generic medication.
The public source identifies “Tamsulosin” as chemical compound. This brief keeps that definition visible, then builds a research path around Tamsulosin, chemical and compound.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Jun 9, 2026. The linked authority identifier is Q418480. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1997.
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This entry incorporates text from “Tamsulosin” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.