Generic vs brand-name medicines: are they the same?

Prescriptions & medicines ·Published 10 October 2026 ·Reviewed 10 October 2026

Written by the Priceline Pharmacy Pacific Fair team. Reviewed by Jason Markey, BPharmSci, MPharm, Owner and Pharmacist.

General health information from a registered pharmacist. It doesn’t replace advice from your own pharmacist or doctor.

Yes, in the ways that matter for your health. A generic medicine has the same active ingredient as the brand-name original, in the same amount, and it works in the same way. healthdirect explains that generic medicines can only be sold in Australia if they meet the same strict standards for quality, safety and effectiveness as the original brand, and those standards are checked by the Therapeutic Goods Administration (TGA).

What can differ is the name, the price and the look of the tablet or box. Here’s what that means for you, and how to ask for a generic next time you’re at the dispensary counter at Pacific Fair.

What is a generic medicine?

When a company develops a new medicine, it’s protected by a patent for a time. healthdirect notes that other manufacturers can only make generic versions once that patent expires. The generic contains the same active ingredient but is sold under a different name.

Generics may cost less than the original because, as healthdirect puts it, their makers haven’t had to spend money on discovery, development and marketing.

You may also notice the active ingredient written on your prescriptions. healthdirect explains that under active ingredient prescribing, Australian health professionals must write the active ingredient on the prescription. That makes it easier to see when two differently named products contain the same medicine.

Are generic medicines as good as the brand?

Yes. healthdirect explains that a generic contains the same amount of active ingredient as the original, acting in the same way, and the TGA checks that it meets the same standards. Pharmacists call this being bioequivalent: the generic delivers the same medicine to your body in the same way, so you can expect the same effect.

healthdirect adds that while generics can contain different fillers and colours, all the ingredients must meet the same quality and safety standards.

A couple of things to be aware of:

• healthdirect says there may be times when you can’t switch between brands, so always check with your pharmacist or doctor first.
• For biological medicines, the equivalent is called a biosimilar. healthdirect describes biosimilars as very similar to the original brand of a biological medicine.

Why does my generic look different?

It’s normal for a generic to look nothing like the brand you’re used to. healthdirect explains that generics may differ in:

• colour, shape and size
• taste
• packaging and name

This is often because of trademark rules, which mean a generic can’t simply copy the original’s look. The inactive ingredients, such as fillers and colours, can also differ. If you have an allergy or intolerance, healthdirect advises checking whether a generic contains an ingredient you react to, so always tell your pharmacist about allergies.

What is the PBS brand premium?

Many PBS medicines come in several brands. Services Australia notes that when there are two or more brands of the same medicine, they may have different prices, and choosing a more expensive brand may cost you more.

healthdirect calls this extra cost a brand price premium. If you prefer the original brand, you may need to pay it in addition to your PBS co-payment. In 2026 that co-payment is up to $25 for general patients and up to $7.70 for concession card holders.

The premium doesn’t disappear once you reach the PBS Safety Net either. The Department of Health says that brand premiums still apply after you reach the Safety Net. To reduce what you spend, healthdirect suggests asking your pharmacist to suggest an alternative, which will be a generic with the same active ingredient.

How does brand substitution work at the pharmacy?

When you hand over a script, your pharmacist may ask if you’re happy to have a generic, or a brand without a premium. You can say yes or no.

There are a few limits:

• Your doctor can ask for a specific brand. healthdirect notes that in some cases your doctor may ask the pharmacist to dispense a particular brand. On the script, this shows as “brand substitution not permitted”, and we then supply the brand prescribed.
• Not every medicine has an alternative. healthdirect notes that not all medicines have generic options available.
• Some medicines are best kept on one brand. If you’re unsure, ask your pharmacist or doctor before changing.

If you take a medicine long term, a generic is one way to save. A 60-day prescription can be another, so read our guide to 60-day prescriptions.

How do you keep track when the box looks different?

A change of box can be confusing, especially if you take several medicines. A few habits help:

• Read the active ingredient, not just the brand name. healthdirect warns that some medicines contain the same active ingredient but have different brand names. Taking two of them together can lead to an accidental overdose. For example, two pain relievers with different names might both contain paracetamol.
• Consider sticking with one brand. If you take many medicines, healthdirect suggests this to avoid confusion. Let your pharmacist know each time you fill your script.
• Keep an up-to-date medicines list. healthdirect recommends a current list showing what each medicine is for, the dose and when to take it.
• Use a dose pack. healthdirect notes that pharmacy-prepared blister packs, also called Webster packs, help you take the right medicines at the right time. Our Webster pack service sorts your doses by day and time, whatever brand is inside.
• Book a medication review. A medication review with our pharmacists is a good time to check which medicines are which (free for Medicare card holders).

How do you ask for a generic?

It only takes a moment at the counter. Try asking:

• “Is there a generic version of this medicine?”
• “Is there a brand premium on this one?”
• “Is it okay for me to switch, or should I stay on this brand?”
• “Will the new tablet look different?”

And if you’d rather stay on the brand you know, say so. It’s your choice, unless your doctor has asked for a specific brand.

When to see a pharmacist or GP

Talk to your pharmacist or GP if:

• you feel different, or notice new side effects, after a change of brand
• you think you may have taken two products with the same active ingredient
• you’re not sure whether a new-looking tablet is the right medicine
• you develop a rash or other signs of an allergic reaction after starting a new brand

If someone has taken the wrong medicine or too much, call the Poisons Information Centre on 13 11 26. Our in-store Help Medical GPs are also an option for anything that needs a doctor.

Call 000 in an emergency. If someone is not breathing, is unresponsive or has a severe allergic reaction, call triple zero (000) straight away.

This article is general information only and isn’t a substitute for personal advice from your doctor or pharmacist. Always read the label and follow the directions for use. If symptoms persist or you’re worried, talk to your pharmacist or GP. In an emergency, call 000.