Metformin Cost Guide: What You Need to Know in 2025

If you’re living with type 2 diabetes, the price of Metformin is probably on your mind. It’s one of the most prescribed drugs for blood‑sugar control, but its cost can vary a lot depending on where you shop, what strength you need, and whether you have insurance.

Typical Prices for Common Strengths

A 500 mg tablet of brand‑name Metformin usually runs $0.30 to $0.60 per pill when you buy it at a pharmacy without any discount. That adds up to about $90–$180 for a 30‑day supply.

Generic Metformin is cheaper. In most U.S. pharmacies, a 500 mg generic tablet costs roughly $0.10–$0.20, making the monthly bill $30–$60. The 850 mg strength is a bit pricier but still far below brand‑name rates.

How Insurance Affects Your Out‑of‑Pocket Cost

If you have health insurance, Metformin often lands in the generic tier of your drug formulary, meaning it could be covered with a low co‑pay. Typical co‑pays range from $5 to $15 per month.

Medicare Part D plans also usually list Metformin as a Tier 1 or Tier 2 drug, keeping costs low for seniors. Always check your plan’s formulary because some plans may require a higher co‑pay if you pick up the brand name instead of generic.

If you’re uninsured, consider using pharmacy discount cards or programs like GoodRx. These tools can shave $10–$20 off the price of a 30‑day supply of generic Metformin.

Ways to Save on Metformin

1. Buy in bulk: Many online pharmacies let you order a three‑month or six‑month supply at a reduced per‑tablet rate. Just make sure the pharmacy is reputable and requires a prescription.

2. Use manufacturer coupons: Some pharmaceutical companies still offer free‑sample coupons for brand‑name Metformin, especially if you qualify based on income.

3. Check local health clinics: Community health centers often have low‑cost drug programs that can provide Metformin at a fraction of the retail price.

4. Ask your doctor about dosage adjustments: If you’re on a higher strength than needed, switching to a lower dose could cut costs without affecting control.

What Affects Price Fluctuations

The cost of Metformin can change due to supply chain issues, raw material prices, and pharmacy pricing policies. During the past year, a few shortages caused short‑term price spikes, but most pharmacies have returned to normal rates.

Seasonal changes in insurance deductibles also play a role. If you’re still meeting your deductible, expect higher out‑of‑pocket costs until it’s satisfied.

Bottom Line

In 2025, generic Metformin remains one of the most affordable diabetes meds on the market—usually under $60 for a month’s supply without insurance. Use discount tools, buy in bulk, and stay on a generic plan to keep your costs low.

Knowing where to look for savings means you can focus more on managing blood sugar and less on worrying about bills. Keep this guide handy next time you refill, and you’ll be ready to get the best price possible.