PBS Metformin: What You Need to Know in 2025

Metformin is the go‑to medicine for type 2 diabetes, and most Australians get it through the Pharmaceutical Benefits Scheme (PBS). If you’ve ever wondered why the price on your bill looks the way it does, you’re in the right place. Below we break down the PBS rules, the out‑of‑pocket amount you’ll face, and how to score a genuine cheap batch online without risking your health.

What PBS Covers for Metformin

The PBS lists metformin as a Tier 2 drug, which means you pay a standard co‑payment instead of the full retail price. In 2025 the co‑payment is AU$3.85 for general patients and AU$1.20 for concession card holders. You only pay this amount if your doctor writes a PBS‑approved prescription and the pharmacy verifies it against the scheme.

There are a few conditions that must be met for the PBS to step in:

• You have a confirmed diagnosis of type 2 diabetes.
• The prescriber follows the PBS dosing guidelines – usually 500 mg to 1 g twice a day.
• You haven’t exceeded the annual PBS limit for the drug (the limit is currently 300 g of metformin per year).

If any of these rules are broken, you’ll be charged the full price, which can be more than ten times the co‑payment.

How to Save Money Buying Metformin

Even with the PBS discount, many people look for cheaper options—especially if they need a long‑term supply. Here are three safe ways to keep the cost low:

1. Use a reputable online pharmacy. Choose a site that is registered with the Australian Government’s TGA and displays a valid pharmacy licence. Look for the “Read the leaflet” link that shows the exact product and dosage.
2. Ask for the generic version. Metformin is available as a generic tablet, which is identical to the brand name but costs far less. The TGA requires the same quality and safety standards, so you won’t be compromising on health.
3. Combine PBS and bulk discounts. Some online pharmacies let you upload your PBS prescription and then pack the medication in a larger bottle (e.g., 60 tablets instead of the usual 30). You still pay the co‑payment per prescription, but the per‑tablet price drops.

Never buy metformin from a marketplace that doesn’t ask for a prescription. If a site offers the drug without any proof of a doctor’s order, it’s likely counterfeit and could be unsafe.

When you receive your order, check the packaging for the TGA seal and compare the batch number with the one listed on the official product information sheet. If anything looks off—misspelled names, weird colors, or missing safety information—contact the pharmacy immediately and request a replacement or refund.

Finally, keep an eye on your PBS statement each quarter. It shows exactly how much you’ve been charged and flags any over‑use. If you notice a discrepancy, call the PBS help line and they’ll sort it out.

Bottom line: the PBS makes metformin affordable for most Australians, but you can shave off a few dollars more by choosing a trusted online pharmacy, opting for the generic, and ordering in bulk. Stay informed, follow the rules, and you’ll keep your blood sugar under control without breaking the bank.