Gwyn Lo is a brand name of Norelgestromin and ethinyl estradiol, a prescription medicine. The FDA NDC Directory lists 1 Gwyn Lo product in 1 strength and form.

Viatris Specialty holds the FDA application for Gwyn Lo (NDA219990, approved July 28, 2026).

Is there a generic or store brand of Gwyn Lo?

Other products of Norelgestromin and ethinyl estradiol are listed with the FDA, but none in exactly the same strength and form as a Gwyn Lo product.

Gwyn Lo (Norelgestromin and ethinyl estradiol): maker, FDA approval and generic versions

Official data, not advice

Everything here comes from the U.S. Food and Drug Administration (FDA): the NDC Directory, Drugs@FDA, the official labels and recall reports; pharmacy costs come from the Centers for Medicare & Medicaid Services (CMS). Each fact shows its source and date.

This page is not medical advice. Talk to your doctor or pharmacist before you start, stop or switch any medicine, including a switch between a brand and a generic.

In an emergency, call 911. If someone may have taken too much of a medicine, call Poison Help: 1‑800‑222‑1222.

Quick answers

What is Gwyn Lo?: Gwyn Lo is a brand name of Norelgestromin and ethinyl estradiol, a prescription medicine. The FDA NDC Directory lists 1 Gwyn Lo product in 1 strength and form.
Who makes Gwyn Lo?: Viatris Specialty holds the FDA application for Gwyn Lo (NDA219990, approved July 28, 2026).
Is there a generic or store brand of Gwyn Lo?: Other products of Norelgestromin and ethinyl estradiol are listed with the FDA, but none in exactly the same strength and form as a Gwyn Lo product.
Has Gwyn Lo been recalled?: No recall linked to Gwyn Lo products (by their NDC code or label) appears in the FDA enforcement reports we use.

What Gwyn Lo is

Each Gwyn Lo product as listed in the FDA NDC Directory, by active ingredient, strength and form, with its official label. “Same medicine, other names” counts the other products with exactly the same active ingredients, strength and form (generic versions, store brands and other brands); inactive ingredients can differ.

Norelgestromin and ethinyl estradiol · prescription medicine

Strength and form	Product names	Same medicine, other names	Label
ethinyl estradiol 20 ug/d · norelgestromin 220 ug/d patch (transdermal)	Gwyn Lo	None listed	—

Its page lists every product and company, the FDA label’s uses and boxed warning, approvals, shortages and recalls: Norelgestromin and ethinyl estradiol →

FDA approval

NDA: New Drug Application: how a new (usually brand-name) medicine is approved.

FDA applications of Gwyn Lo products (Drugs@FDA)
Application	Holder	First approved	Products
NDA219990	Viatris Specialty	July 28, 2026	1

Companies that list Gwyn Lo

The company named on the package (holder, repackager or distributor), as listed in the FDA NDC Directory, with its number of Gwyn Lo products.

Viatris Specialty LLC1 product

Recalls

No recall linked to Gwyn Lo products (by their NDC code or label) appears in the FDA enforcement reports.

Sources

NDC Directory (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
Drugs@FDA (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
Drug labeling (SPL, openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
Drug recall enforcement reports (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 27, 2026, retrieved October 31, 2026
NADAC (National Average Drug Acquisition Cost) 2026 — Centers for Medicare & Medicaid Services (CMS), data.medicaid.gov, list of November 4, 2026, retrieved November 7, 2026

Which names get a brand page: a name the NDC Directory lists for a medicine, held by one company (the FDA application holder, or the company named on most of its products), that is not just a description, and that is not the only product of its medicine.

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Gwyn Lo