Colistin Price Without Insurance — $138–$300 Cash (2026)
How much does Colistin cost?
Colistin costs from $138/month at verified pharmacies on Script Unlock — up to 54% less than the retail price of $300. No insurance card, no discount coupon, and no membership needed. Cash pay through Script Unlock's competitive bidding marketplace typically beats GoodRx and SingleCare on chronic medications.
- Retail cash price: $300/month at chain pharmacies
- Script Unlock cash price: from $138/month (54% off)
- No PBM middleman — pharmacies bid directly for your prescription
Colistin (Colistimethate sodium) cash price ranges from $138 to $390 without insurance depending on which pharmacy you use. Pharmacies compete on Script Unlock — find the lowest price near you.
Why Colistin Prices Vary So Much
Colistin (Colistimethate sodium) is a commonly prescribed medication, but prices vary dramatically between pharmacies. The same prescription can cost $138 at one pharmacy and $390 at another — with no difference in the medication itself. Script Unlock helps patients find the lowest verified price.
Who Needs Colistin?
Colistin is prescribed for antibiotics management. Ask your doctor whether Colistin is right for your condition and what dosage you need.
How to Save on Colistin
The best way to save on Colistin is to compare prices before you fill. Independent pharmacies often charge significantly less than chains for the same medication. Script Unlock makes this comparison instant — and free.
How Script Unlock Works for Colistin
Search your drug
Enter Colistin and your zip code. See verified prices from pharmacies near you instantly.
Pharmacies compete
Local pharmacies bid on your prescription. More competition means lower prices for you.
Fill for less
Pick the pharmacy with the best price for Colistin. No coupons, no memberships, no surprises.
Colistin Cost by Dose
Colistin pricing varies with the prescribed strength. Below are typical Script Unlock cash prices for common Colistin dose strengths, comparing 30-day and 90-day supplies.
| Strength | 30-day cash | 90-day cash | 90-day savings |
|---|---|---|---|
| 250 mg | $157 | $422 | 10% |
| 500 mg | $179 | $430 | 20% |
Prices reflect typical Script Unlock verified pharmacy pricing. Your actual price depends on the specific pharmacy you choose and their real-time inventory.
Colistin Cost by Pharmacy Chain
Chain pharmacy cash prices for Colistin vary significantly. Below are typical retail cash prices at major US pharmacy chains, without coupons or insurance.
| Pharmacy | 30-day cash | 90-day cash | Coupons? |
|---|---|---|---|
| CVS Pharmacy | $342 | $872 | Available |
| Walgreens | $363 | $926 | Limited |
| Walmart | $247 | $630 | Available |
| Costco Pharmacy | $229 | $584 | Available |
| Kroger Pharmacy | $251 | $640 | Limited |
| Rite Aid | $328 | $836 | Available |
| Publix Pharmacy | $257 | $655 | Available |
| Safeway Pharmacy | $291 | $742 | Limited |
| Script Unlock verified pharmacies | $138 | $352 | Cash — no coupon |
Chain prices shown are typical US-average retail cash prices. Coupon apps (GoodRx, SingleCare, RxSaver) are usually 20–40% lower than the "Coupons Available" column — but still typically higher than Script Unlock verified pharmacy prices.
Colistin Cost by US State
Colistin cash prices vary state by state due to differences in wholesale networks, PBM regulation, and pharmacy density. Below are typical Script Unlock verified prices in the 12 largest states.
5 Ways to Save on Colistin
Beyond simply paying retail, here are the five most effective ways to reduce your Colistin cost. We're listing all options — not just Script Unlock — so you can pick what works best for your situation.
Compare cash prices across pharmacies (Script Unlock)
Pharmacies set different cash prices for Colistin. Verified independent pharmacies typically charge 40–70% less than chain pharmacies for the same medication. Script Unlock shows you real cash prices from pharmacies near you — no insurance required, no coupon codes, no membership fees.
Switch to the generic version
Colistin has a generic alternative — Colistimethate sodium — that contains the identical active ingredient at the same dose. FDA-approved generics undergo the same bioequivalence testing as brand medications. Ask your prescriber if generic Colistimethate sodium is appropriate.
Buy a 90-day supply instead of 30-day
Pharmacies typically discount 90-day supplies of Colistin by 10–20% compared to buying 30-day quantities three times. Fewer dispensing fees, fewer refill trips. Ask your prescriber to write a 90-day prescription with refills.
Check for manufacturer patient assistance
If Colistin is a brand-name medication and you meet income thresholds, the manufacturer may offer a Patient Assistance Program (PAP) providing the drug at no cost. Programs typically require prescriber attestation and annual re-enrollment. Note: PAPs usually exclude Medicare patients due to federal anti-kickback rules.
Ask your prescriber about therapeutic alternatives
There may be a clinically similar medication in the same drug class at a lower price. For example, older members of a drug class often cost less than newer options while providing similar clinical outcomes for many patients. Never switch medications without prescriber approval — but a conversation costs nothing.
Colistin Cost — Frequently Asked Questions
How much does Colistin cost without insurance?
Why do Colistin prices vary so much between pharmacies?
Is generic Colistimethate sodium available?
Can I get Colistin without a prescription?
What is the cheapest pharmacy for Colistin?
Does insurance cover Colistin?
Can I use GoodRx or SingleCare for Colistin?
Is it safe to buy Colistin from an independent pharmacy?
Can Medicare patients save on Colistin?
Do Colistin prices change frequently?
Should I fill Colistin at a mail-order pharmacy?
Are Colistin manufacturer coupons or copay cards useful?
How do I get the price I see on Script Unlock?
Medical Disclaimer
This page provides pricing information only. Always consult your doctor or pharmacist before starting, stopping, or changing any medication. Colistin requires a valid prescription from a licensed healthcare provider.
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