The Rationale of Estrogen Dose Reduction: The Justification for 20æg Ethinylestradiol
🗃Compiled automatically from public product data — the attributes on this page are assembled from the sources we hold, not written by a person or drafted by AI, and individual pages are not reviewed one by one. How we use AI →
17-beta-Estradiol is a natural form of the hormone estrogen, often simply called estradiol. It is used in hormone replacement therapy, birth control pills, and some cancer treatments. This substance is also found naturally in the body. California's Proposition 65 lists 17-beta-Estradiol because it is classified as a carcinogen, meaning it has been linked to cancer in scientific studies. The listing does not mean that everyday exposure is dangerous, but it requires businesses to inform Californians about significant exposures. The California Office of Environmental Health Hazard Assessment (OEHHA) manages this list to help people make informed choices.
This summary draws on public regulatory data; the linked source is authoritative.
IARC carcinogen (1)
Combined estrogen-progestogen contraceptives CAS n/a
A factual report of what public registries and product databases returned for this EAN. We do not authenticate products or issue safety verdicts — we only report what we found.
Identifier checks
📋 EAN format: the GTIN-13 mod-10 checksum is consistent with the GS1 standard (format check only; does not authenticate the physical product)
📋 GS1 prefix 978 indicates the issuing office in Bookland (ISBN-13) (this is the country where the brand owner registered the EAN; it is not necessarily where the product was manufactured. Source: GS1 country code list)
📋 Brand entries found: no entry for Informa Healthcare in the Wikidata brand registry (our coverage of Wikidata is partial; absence is not a finding either way)
📋 Listed in 0 of the public product catalogues we check (our catalogue coverage is partial; absence is not a finding either way)
Registry scans
📋 Recall registry scan returned 0 matches (sources scanned: CPSC, FDA, RAPEX, Health Canada, NHTSA. Coverage gaps exist; we cannot speak to records outside these registries)
📋 Substance database scan returned 3 name matches with H-codes / regulated-substance entries (see substances section. This is a name match against label/ingredient text only; it does not confirm batch presence)
📋 Banned-ingredient scan (EU Cosmetic Annex II) returned 0 matches (source: EU Reg. 1223/2009. Scanned against available label text only)
📋 Certifications listed in our databases: none found (registries scanned: EU Ecolabel, US ENERGY STAR, US EPA Safer Choice. Many legitimate products are not enrolled in these schemes)
📋 Medical device registry: not listed in US FDA GUDID or EU EUDAMED (most consumer products are not medical devices and would not be expected to appear)
Sources scanned: GS1 country prefix · Wikidata brand registry · Open Beauty / Food Facts · USDA FDC Branded Foods · Nudger GTIN dataset · EU Safety Gate (RAPEX) · US CPSC · US FDA recalls · Health Canada Recalls · NHTSA recalls · ECHA SVHC · REACH Annex XVII · EU RoHS · Stockholm POPs · CLP Annex VI · EU Cosmetic Annex II · EU Ecolabel · US ENERGY STAR · US EPA Safer Choice · US FDA GUDID · EU EUDAMED. Last refreshed: .
About this section. We aggregated what we found across 24 public registries and product databases as of . This is not an authentication, certification, or safety endorsement. Coverage gaps in our source data exist. For definitive verification, please contact the manufacturer or the relevant regulator directly.
Disclaimer. Substance and ingredient information is matched against public government registries (cited above) and may be incomplete or imprecise for a specific batch. This page is informational only and does not constitute medical, legal, or safety advice. For health concerns consult a qualified specialist. For confirmed product safety status refer to the manufacturer and the linked regulatory source.
Provenance
Last updated: . See About for the full source list.