How much does Colistimethate cost without insurance?

We compare cash prices for Colistimethate live across verified pharmacies on the drug page, the current lowest price is shown there. Cash prices are unregulated and vary by pharmacy, so compare before you fill and confirm the price at the counter.

Is there a generic for Colistimethate?

Yes. Colistimethate is the generic; it is also sold under brand names such as Coly-Mycin M. The generic is typically far cheaper than brand and is what our verified cash prices reflect.

Can I use the free BetterBuyRx discount card for Colistimethate?

Yes. The free BetterBuyRx discount card recently showed $7.99 for this medication at a partner-network pharmacy in the 750xx ZIP area (checked Aug 27, 2026). Card prices vary by ZIP, enter yours on the drug page to see local pharmacy prices. Show the card (BIN, PCN, Group, and Member ID where required) at the counter; it can't be combined with insurance.

Why does the price of Colistimethate vary so much between pharmacies?

U.S. cash prescription prices are unregulated, each pharmacy sets its own markup, and discount programs and mail-order sources widen the spread further (this is common across the Antibiotic class). That's why comparing verified prices before you fill can save money.

AntibioticGeneric available

Colistimethate

Sold as Coly-Mycin M

Colistimethate (sold as Coly-Mycin M) is used for: Bacterial infection.

Compare prices →~$0.00 / mo (generic, NADAC)

As of August 2026, Colistimethate (150mg) cash prices are compared live across verified pharmacies and mail-order pharmacies on BetterBuyRx, see the current numbers on the drug page below. Prices change; confirm at the counter.

Save with the free BetterBuyRx card

The BetterBuyRx discount card is free, no signup, no insurance needed. It recently showed $7.99 for Colistimethate at a partner-network pharmacy in the 750xx ZIP area, card prices vary by ZIP, so enter yours on the drug page for local pharmacy prices. Show the card at the pharmacy counter; it can't be combined with insurance.

Get the free card →Colistimethate coupon & card price →

Frequently asked questions

How much does Colistimethate cost without insurance?: We compare cash prices for Colistimethate live across verified pharmacies on the drug page, the current lowest price is shown there. Cash prices are unregulated and vary by pharmacy, so compare before you fill and confirm the price at the counter.
Is there a generic for Colistimethate?: Yes. Colistimethate is the generic; it is also sold under brand names such as Coly-Mycin M. The generic is typically far cheaper than brand and is what our verified cash prices reflect.
Can I use the free BetterBuyRx discount card for Colistimethate?: Yes. The free BetterBuyRx discount card recently showed $7.99 for this medication at a partner-network pharmacy in the 750xx ZIP area (checked Aug 27, 2026). Card prices vary by ZIP, enter yours on the drug page to see local pharmacy prices. Show the card (BIN, PCN, Group, and Member ID where required) at the counter; it can't be combined with insurance.
Why does the price of Colistimethate vary so much between pharmacies?: U.S. cash prescription prices are unregulated, each pharmacy sets its own markup, and discount programs and mail-order sources widen the spread further (this is common across the Antibiotic class). That's why comparing verified prices before you fill can save money.

We're still expanding this entry. For full prescribing information, see the FDA label below.

Clinical content reviewed by the BetterBuyRx clinical team.

Educational only. Not medical advice. Always confirm with your prescriber or pharmacist.