How much metformin costs when you have no insurance

What metformin is used for

Metformin is a medicine that doctors have prescribed for many years. MedlinePlus, a health site from the National Library of Medicine, says it is used alone or with other medicines to treat type 2 diabetes. In that condition the body does not use insulin normally and cannot control the sugar in the blood. MedlinePlus also says metformin is not used to treat type 1 diabetes.

You will see metformin sold under its generic name, which is the plain name of the medicine itself. A generic is a copy of a brand-name drug, and the FDA says it has the same active ingredient and strength as the brand. That is the main reason the price is so low.

This page gives general information and is not medical advice. Your doctor decides whether metformin is right for you and how you should take it. In an emergency, call 911 or go to the nearest emergency room.

What pharmacies pay for metformin tablets

Our price numbers come from the Centers for Medicare and Medicaid Services, a federal health agency. Its national drug cost survey, called NADAC, shows what pharmacies pay on average to buy a drug. The numbers below are from the week of October 7, 2026.

• A regular metformin 500 mg tablet cost pharmacies about 1.5 cents each.
• A regular 850 mg tablet cost about 2.4 cents, and a 1,000 mg tablet cost about 2.3 cents.
• An extended-release 500 mg tablet cost about 2.8 cents, and an extended-release 750 mg tablet cost about 5.3 cents. Extended-release means the tablet lets out the medicine slowly over the day.
• Other extended-release types cost more, with pharmacies paying about 16.4 cents for one osmotic 500 mg tablet. They paid about 33.6 cents for one tablet of another 1,000 mg type.

To get a rough total, multiply the per-tablet price by the number of tablets on your prescription. Thirty tablets at 1.5 cents come to about 45 cents. That is only what the pharmacy paid, and your cash price will be higher because the pharmacy adds a fee. Your pharmacist can tell you the exact price.

The oral liquid costs far more per dose than the tablets. Pharmacies paid about 38 cents per milliliter for the 500 mg per 5 mL liquid. If you have trouble swallowing pills, ask your doctor or pharmacist which form fits you.

Why can two pharmacies charge different cash prices?

Every pharmacy sets its own cash price, which is the price for someone paying without insurance. No government list of counter prices turned up in our search, so we leave out a counter price. Two pharmacies in the same town can charge quite different amounts for the same tablet.

The gap comes from a few things, and the first is the fee that each pharmacy adds on its own. A 90-day supply may cost less per tablet than a 30-day supply. The form on the prescription matters too, since some extended-release tablets cost more than regular ones. Our guide on getting prescriptions without insurance shows how to compare pharmacies, and the guide on asking for the cash price has a phone script.

How to fill a metformin prescription for less

1. Ask your doctor's office for the exact name and strength, and whether the tablet is regular or extended-release.
2. Ask the office whether the prescription can be sent to the pharmacy you choose after you compare prices.
3. Call two or three pharmacies and say, "I do not have insurance, so what is your cash price for this prescription?"
4. Ask for the price of a 30-day supply and of a 90-day supply, and find out whether a refill costs the same.
5. Write down each price along with the name of the person who gave it to you.

Refills matter because people usually take metformin for a long time. A small price gap each month adds up over a year. A pharmacy that saves you a few dollars a month will save you more over twelve months than a one-time discount would.

The pills are the small part of the cost

A medicine you take for years comes with regular checkups. MedlinePlus says your doctor will order certain tests before and during treatment. These tests check how well your kidneys are working and how your body responds to metformin. When you pay without insurance, the tests are an extra cost.

You can lower that cost in a few ways. Ask the doctor's office for the price of each lab test before you have it done. The guide on lab tests without insurance explains how to find a lower price. You can also ask the office to explain what each test is for. The doctor is the one who knows the answer.

A community health center charges on a sliding scale based on your income, and it may have its own pharmacy. A direct primary care membership is usually $50 to $200 a month. To see what a membership includes, search for a cash-pay doctor near you.

When cost makes it hard to keep taking your medicine

Please do not stop or skip metformin because of the price without talking to your doctor or pharmacist first. Tell them plainly what is going on, because they hear this often. They may know a lower-cost choice or a program that helps.

MedlinePlus says some drug makers have patient assistance programs, but those are mostly for brand-name medicines. Generic metformin is already inexpensive, so comparing pharmacy prices is the simpler step. If you also need diabetes supplies or other medicines that cost more, a clinic social worker or a health center may be able to help.

For other low-cost places to get seen, read our guide on care without insurance. The guide on community health centers explains how sliding-scale care works.