Colistin Coupon 2026 — Skip the Hunt, Pay $138 Cash
Is there a Colistin coupon?
Skip the coupon: Colistin cash prices from $138/month at verified pharmacies on Script Unlock — typically lower than GoodRx (~$180), SingleCare (~$165), and RxSaver (~$174). Pharmacies bid directly for your prescription instead of paying a coupon middleman, so the savings pass through to you. No card, no membership, no data sold to PBMs.
- Script Unlock cash: from $138/month
- GoodRx coupon typical: ~$180/month
- SingleCare coupon typical: ~$165/month
Coupons for Colistin (Colistimethate sodium) look like deals — until you compare them to real pharmacy competition. Verified US pharmacies on Script Unlock bid as low as $138/month, with no coupon to clip and no data sold to PBMs.
Upload your prescription — free, 60 seconds. No coupon code needed.
Why Colistin Coupons Don't Work as Well as You Think
Three structural problems with the coupon model — and why bidding fixes all of them:
1. They expire or change without notice
Coupon prices for Colistin can change daily as PBMs renegotiate rebates. The "$X coupon" you see on Tuesday might be gone Thursday — and the price at the register often differs from what was advertised.
2. GoodRx and SingleCare sell your prescription data to PBMs
When you use a discount coupon, your prescription history, dosage, demographic info, and refill cadence are shared with the PBMs that profit from prescription data. The 2023 FTC settlement against GoodRx confirmed this practice in detail.
3. Limited to select pharmacies — yours may not be included
Coupon programs only work at participating pharmacies — usually big chains. Your local independent (often the cheapest cash-pay option for Colistin) may not accept the coupon at all.
Colistin Coupon Comparison (2026)
Side-by-side: typical coupon prices vs Script Unlock bids for Colistin.
| Source | Typical Colistin Price | Catches |
|---|---|---|
| GoodRx | ~$180/mo | Data sold to PBMs (FTC-confirmed) |
| SingleCare | ~$165/mo | Limited pharmacy network |
| RxSaver | ~$174/mo | Varies; same PBM-data model |
| Script Unlock | From $138/mo | No data selling, pharmacies compete |
Coupon prices are typical published rates for Colistin (Colistimethate sodium) as of 2026 and vary by zip code and quantity.
The Bidding Advantage
Pharmacies compete
Instead of accepting a fixed coupon rate, verified pharmacies fight each other for your Colistin script — which drives the price down naturally.
Price falls in real time
As more pharmacies join the bid window, the lowest verified price keeps dropping. You pick the winning bid — no negotiation needed.
Your data stays private
No PBM sees your prescription. No data broker gets your refill cadence. Script Unlock does not sell prescription data — period.
Your Colistin Savings Calculator
Script Unlock low bid: $138/mo
Estimates based on monthly Colistin fill at typical dose. Actual savings depend on your specific Rx and the winning bid.
Colistin Pricing by State
State-level bid availability for Colistin:
Frequently Asked Questions
Are Colistin coupons still worth using in 2026?+
Less than you'd think. Coupon programs like GoodRx and SingleCare have published prices that look like discounts, but they're typically 40% off retail at best for Colistin. Script Unlock's verified pharmacy bids regularly come in lower (~$138/mo) because pharmacies actively compete instead of accepting a fixed coupon rate.
Why is the price on a Colistin GoodRx coupon different from what I pay?+
Coupon prices change without notice — sometimes daily. The advertised Colistin price may not match what the pharmacy charges at the register because GoodRx renegotiates with PBMs constantly. Script Unlock bids are locked once accepted, so the price you see is the price you pay.
Does GoodRx sell my Colistin prescription data?+
Yes. GoodRx, SingleCare, and most coupon companies share or sell prescription, demographic, and behavioural data to pharmacy benefit managers (PBMs), advertisers, and data brokers. This was confirmed in the 2023 FTC enforcement action against GoodRx. Script Unlock does not sell or share your prescription data.
Can I use a manufacturer coupon for Colistin?+
Manufacturer coupons exist for some brand-name drugs but rarely for generics. They also typically exclude patients with government insurance (Medicare/Medicaid) and have annual savings caps. For Colistin, a Script Unlock cash-pay bid almost always beats both manufacturer and third-party coupons.
What's the real cheapest way to buy Colistin?+
Cash-pay through a competitive bidding marketplace. Upload your prescription to Script Unlock and verified US pharmacies bid against each other — current low bids for Colistin start at $138/month. No coupons to clip, no expiration dates, no PBM middleman.
More Colistin Resources
Skip the coupon hunt — get a real bid
Upload your Colistin prescription. Verified US pharmacies compete on cash price. Pay as low as $138/month.
Get Colistin Bids