If you take metformin for diabetes, you’ve probably checked the price at the pharmacy and wondered why it changes. The good news is that Australia’s health system, private pharmacies, and online stores all play a part in what you pay. This guide breaks down the numbers, the subsidies, and the safest ways to get a low price without risking your health.
The Therapeutic Goods Administration (TGA) approves the drug, then the Pharmaceutical Benefits Scheme (PBS) decides how much the government will subsidize. When a brand‑name or generic metformin is on the PBS, you usually pay a co‑pay of about $42.40 for a 30‑day supply (as of 2025). If the medication is not listed, you’ll pay the full retail price, which can range from $8 to $15 per pack of 500 mg tablets, depending on the pharmacy and the brand.
Several factors push the price up or down. Generic versions are cheaper because multiple manufacturers compete. Larger chains often have discount programs, while small independent pharmacies may charge a bit more. Also, the dosage matters – higher strength tablets cost more per tablet, but you might need fewer of them, so the total can be similar.
The easiest place to start is your local pharmacy that participates in the PBS. Bring your doctor’s script, and the pharmacist will apply the subsidy automatically. If you have a private health cover, check whether it adds any extra rebate for diabetes meds. Some health funds have partnerships with specific pharmacies that lower the co‑pay further.
Online pharmacies can be a real money‑saver, but only if they’re reputable. Look for sites that require a valid Australian prescription, display their TGA registration number, and offer clear pricing. In 2025, buying a 30‑day supply of generic metformin from a licensed online pharmacy can cost as low as $6 after the PBS co‑pay, plus standard shipping.
Don’t forget bulk buying. Ordering a three‑month supply at once often reduces the per‑tablet cost because the pharmacy can charge a single co‑pay for the whole batch. Just make sure the script covers the longer supply – many doctors will write a 3‑month repeat for stable patients.
Another tip: compare the price of the 500 mg tablet versus the 850 mg tablet. If your dose can be met with fewer 850 mg tablets, the total price might be lower despite the higher per‑tablet cost. Talk to your doctor about the best strength for you.
Finally, keep an eye on seasonal promotions. Some pharmacy chains run “Diabetes Care Weeks” where they waive the co‑pay for PBS‑listed medicines. Signing up for pharmacy newsletters can alert you to these deals before they end.
In short, the base price of metformin in Australia is set by the PBS, but you can shave off dollars by choosing generic brands, using reputable online pharmacies, buying in bulk, and staying aware of pharmacy promotions. Always verify that any online store asks for a valid prescription and shows its TGA registration – that’s the safest way to avoid counterfeit meds.
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