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Verapamil

chemical compound

Specimen drawers, botanical folios and brass scientific instruments under study light
Science and natureInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 21, 2026
Entity authorityQ410291 ↗
Source-derived summary

Verapamil, sold under various trade names, is a calcium channel blocker medication used for the treatment of high blood pressure, angina (chest pain from not enough blood flow to the heart), and supraventricular tachycardia. It may also be used for the prevention of migraines and cluster headaches. It is given by mouth or by injection into a vein.

Common side effects include headache, low blood pressure, nausea, and constipation. Other side effects include allergic reactions and muscle pains. It is not recommended in people with a slow heart rate or heart failure. It is believed to cause problems for the fetus if used during pregnancy. It is in the non–dihydropyridine calcium channel blocker family of medications.

Verapamil was approved for medical use in the United States in 1981. It is on the World Health Organization's List of Essential Medicines.

Editorial summary

“Verapamil” enters the record as chemical compound. Crown Archives preserves that source wording while asking what Verapamil, chemical and compound can confirm, complicate or overturn.

Editorial reviewA sound reference starting point where classification, measurement and the date of the underlying evidence remain visible. The current lead gives the account dated anchors—1981—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Verapamil, chemical and compound.
Editorial analysis

Why this record matters

“Verapamil” is worth following because a concise public description often conceals a longer documentary argument. Here, Verapamil, chemical and compound provides the most credible route into that argument.

Evidence profile

Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Aug 21, 2026. The linked authority identifier is Q410291. The Library of Congress control number is sh93000011. None of the 1 selected statements returned an explicit reference. The first chronological checks are 1981.

Critical limits

A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.

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  • Classification context
  • Finding cited technical literature
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Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.

Three-step research path

  1. Establish the record: confirm the title “Verapamil”, its source revision and the description used here.
  2. Expand the search: follow Verapamil primary sources, Verapamil archive and Verapamil research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Verapamil”?
  2. Which observation, specimen, dataset or publication supports the account?
  3. Has classification or technical consensus changed since the cited source?
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Source & attribution

This entry incorporates text from “Verapamil” 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.