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Branded vs generic medications: What’s the difference?
Branded versus generic can be the source of a lot of confusion. Branded medicines are patented when a new medicine is released and often more expensive, while generics appear once the patent expires.
While it’s true that there can be small differences between branded and generic versions, for most people, these differences don’t matter. Both usually work just as well and have similar side effects.
Medically reviewed by
Sanjeda Chowdhury, Superintendent Pharmacist + Independent Prescriber
- When a medication is first launched on a market, it’s patented and sold under a brand name, chosen by the original manufacturer.
- Generics start entering the market once the patent of the original medication expires. They can take the name of the active ingredient or have their own brand names.
- There are slight differences between the branded and generic versions of the same drug, but usually nothing of consequence. So they generally have similar effectiveness and side effects.
- Brands are usually more expensive than their generic counterparts. This is often because of the high costs of developing and marketing the drug, as well as the lack of competition while the brand is protected by the patent.
- Some people prefer branded treatments for reasons related to familiarity and trust, brand recognition, lack of awareness or knowledge about generics, or personal experience.
Why do medications have different names?
You’ve probably noticed that some medications go by their marketing name (decided by the manufacturer, e.g., Viagra) and others by their active ingredient name (also called the international non-proprietary name, decided by an independent panel, e.g., Sildenafil).
So why does this happen? It comes down to how medicines are developed.
- Branded (proprietary) medications: These are the first versions of a medicine and are protected by a patent (exclusive rights) for a specified period of time. For example, Mounjaro is the first medication containing the active ingredient tirzepatide. Because it’s the original product, it’s known as the originator (or reference) medicine and benefits from patent protection until 2032. During this time, no other company can legally manufacture the same medicine using that active ingredient.
- Generics: Once patent protection runs out, other manufacturers can produce medicines containing the same active ingredient, known as generics. They can bear the name of the active ingredient(s) (e.g., Sildenafil) and tend to come in basic packaging, or:
- A branded generic name: A hybrid of the above, these are not the original medication, but they still have a brand name and come in designed packaging. They will likely be more expensive than traditional generics but cheaper than the original branded medication. Examples include Aronix (sildenafil) and SyreniRing (generic of the contraceptive ring NuvaRing).
Typically, patent protection lasts at least eight years, and generics start entering the market around 10 years after the original branded medications. Once this happens, it usually creates competition between companies, which can lead to much lower prices.
Why do some medications not have a generic?
Most often, because other companies are not allowed to manufacture generics while a medicine is still protected by a patent. When a company introduces a new medication to the market, like Wegovy for weight loss, the original manufacturer holds the exclusive rights to produce and sell the medication under a patent. This means that no other company can sell it until the patent expires.
In the case of Wegovy, the UK patent will expire in 2032. This means that Novo Nordisk, the manufacturer of Wegovy, retains exclusive rights to produce and sell the medicine, and until the patent expires, no other companies can make generic versions.
Are branded drugs more effective?
Generally, branded drugs are not proven to be more effective than generics. Regulatory bodies ensure that the generic medications are safe and meet certain quality standards. Also, compared to the reference (brand) product, the generic must:
- have the same active ingredient
- have the same strength
- come in the same dosage form (tablets, capsules, creams, injections)
- be administered via the same route (by mouth, topical, intravenously, and so on)
- demonstrate bioequivalence in healthy volunteers (the generic needs to perform equally to the brand-name drug in the body)
To prove that they’re bioequivalent to the reference medication, the generic must show that it:
- is absorbed into the body at a similar rate and to the same extent
- reaches similar levels in the blood
- falls within a ‘safe range’ of 80% to 125% compared with the reference medicine
So usually, generics are similarly effective to their branded alternatives.
Are branded medications safer?
Branded medicines aren’t necessarily safer than generic ones. Regulatory agencies like the UK’s Medicines and Healthcare products Regulatory Agency (MHRA) make sure that generics meet the same standards for safety as the original branded medication. Because of this, both branded and generic medicines typically have the same possible side effects.
One sidenote is that some inactive ingredients (also called excipients) may differ between the brand and the generic. These don’t affect how the medicine works, but some people may react differently to them. For example, if a medication contains lactose and you’re allergic or intolerant, that medication (branded or generic) may not be safe for you.
So if you know you have certain allergies, it’s best to tell your clinician about them so that they can help you decide which medications are safest.
Why are branded medications more expensive?
Branded medications are often more expensive for a few reasons:
- To recoup the costs of developing the drug. This is a process that often takes years and costs between $378.7 million and $2 billion. This massive cost includes clinical trials, research, and hundreds, if not thousands, of failed drug candidates. So the increased price helps to counter that initial outlay.
- Lack of competition. Particularly if the medication is new, the original manufacturer owns the patent to the drug. This gives them exclusive control over producing and selling that medicine for a set period (usually at least eight years). And this can mean they don’t need to compete with other companies on price. But this usually changes once generics enter the market and competition increases, which tends to drive prices down.
- Branding and marketing. Branded medicines typically need advertising, promotion to healthcare professionals, and marketing campaigns, all of which add to the overall cost of the product. Generic manufacturers don’t usually spend as much on these areas, so their products can be sold at lower prices while still meeting the same quality standards.
That said, this is not always the case. Sometimes, you’ll find that some generics cost more than the alternative brands. Reasons for this can involve periods of high demand, supply shortages, or if the generic uses special formulations or delivery methods that make them slightly more expensive to produce.
Are brand-name and generic medications always the same?
Not always. Branded and generic medicines contain the same active ingredient and work in very similar ways. But they can differ in other ways, too. These differences may come from the inactive ingredients, also called excipients, which give the medicine its shape, colour, stability, or taste, and which can vary between branded and generic versions.
Because of this, medications aren’t always exactly the same. In some cases, these differences can affect:
- Appearance: Different dyes, fillers, etc can make treatments look a little different. For example, Viagra comes as a blue diamond-shaped pill, while generic Sildenafil is usually white or off-white.
- Taste: Flavourings, sweeteners, or coatings can also vary between brands and generics. For example, a branded cough syrup might be cherry-flavoured versus the generic version, which could be orange-flavoured or taste slightly different. While the taste doesn’t affect how well the medicine works, it can make one easier or more pleasant to take than the other.
- Bioavailability: Differences in inactive ingredients can change how the medicine is absorbed. For most medications, this doesn’t matter much. But for some medicines with a narrow therapeutic index (for which there’s only a small gap between a medicine’s effective dose and a dose that could be harmful), even small changes can have a noticeable and potentially unsafe effect. A few examples include antiepileptics, some heart medications, and blood thinners. In these cases, your prescriber may recommend sticking to the same brand.
If you’re unsure, it’s always a good idea to ask your clinician for advice before switching medications.
Why do people choose branded medicines?
Branded and generic medicines typically work in very similar ways, but some people prefer branded versions, often due to:
- Familiarity and trust, because people tend to feel more comfortable using a medicine they’ve taken before and recognise, especially if it’s worked well for them in the past.
- Brand recognition, since well-known brands are easier to remember and recognise on pharmacy or supermarket shelves. Plus, brands use advertising and attractive packaging, which can make the medications feel more ‘high quality’ or reliable, even though generics must meet the same regulatory standards.
- Lack of awareness about generics, as some people don’t realise that generics exist or that they typically work just as well as branded equivalents.
- Personal experience, as some believe that a branded medicine works better for them than a generic alternative. In some cases, this can come down to expectations and beliefs, which can affect how we experience symptom relief, which is known as the placebo effect.
Branded versus generic medicines: famous examples
While the list could be much longer, since many medicines are available in both generic and branded forms, here are some well-known examples of branded medicines and their generic equivalents, all containing the same active ingredient:
| Branded Medicine | Generic Name |
|---|---|
| Viagra | Sildenafil |
| Nurofen, Brufen | Ibuprofen |
| Panadol, Calpol | Paracetamol |
| Imodium, Loritax | Loperamide |
| Clarityn | Loratadine |
| Losec | Omeprazole |
| Ventolin, Salamol, Airomir | Salbutamol |
| Augmentin | Amoxicillin/Clavulanic acid |
| Lipitor | Atorvastatin |
| Glucophage | Metformin |
Reference Popover #ref1
Treated trusted source
European Medicines Agency (2010).
Guideline on the investigation of bioequivalence.
Reference Popover #ref2
Treated trusted source
Sertkaya, A., et al. (2024).
Costs of Drug Development and Research and Development Intensity in the US, 2000-2018. JAMA Network Open, 7(6), e2415445.
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