Medicines and prescriptions
What Is the Difference Between Generic and Brand Medicines?
Generic vs Brand-Name Medicine · say it: juh-NAIR-ik vs brandAlso written: generic medicine, brand-name drug, proprietary name, non-proprietary name, biosimilar
Short answer
A generic medicine contains the same active ingredient as a brand-name medicine and must meet the same standards, but is sold under its chemical name.
What it means
When a company develops a new medicine, it sells it under a brand name and usually has a patent for some years. After that, other makers can produce the same active ingredient and sell it under its generic (chemical) name, often at a lower price.
Regulators require generic medicines to have the same active ingredient, strength and form, and to work in the body in an equivalent way. The inactive ingredients, such as fillers, colours and shape, can differ.
Prescriptions and labels may show either name, or both. The same medicine can therefore look different from one refill to the next. For some complex biological medicines, the near-equivalent versions are called biosimilars.
Where you may see it
- Prescriptions and pharmacy labels
- Insurance formularies and benefit statements
- Medicine lists in discharge summaries
📄 How it looks on a report
Atorvastatin 20 mg (generic for Lipitor)
🙅 What it does not mean
- Generic does not mean lower quality; it must meet the same regulatory standards for the active ingredient.
- A pill that looks different is not necessarily a different medicine; ask the pharmacist if you are unsure.
- Inactive ingredients can differ, which may matter for some people with allergies or intolerances.
🗒️ Questions to ask your doctor
🧾 Reports where you will see “Generic vs Brand-Name Medicine”
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💊 Medicines whose labels mention “Generic vs Brand-Name Medicine”
Plain-English explanations of each medicine, from its official FDA label.
- Insulin Glargine
an insulin analog, a long-acting man-made insulin used to treat diabetes
🔗 Read more from trusted sources
- “Generic vs Brand-Name Medicine” on MedlinePlus ↗
US National Library of Medicine
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