Free or Low-Cost Colistin — Patient Assistance Programs + Cash Options
If you can't afford Colistin, you're not alone. Roughly 1 in 4 Americans skip prescriptions because of cost. Here are real options — most are free or near-free for qualifying patients.
4 paths to free or low-cost Colistin
Manufacturer Patient Assistance Program (PAP)
Most major brand-name drugs offer a free-drug program for uninsured or underinsured patients who qualify by income. Examples include Pfizer RxPathways, Lilly Cares, BMS Patient Assistance Foundation, Merck Helps, and AstraZeneca AZ&Me. Approval typically takes 2–6 weeks; medication is then shipped to your prescriber or pharmacy.
340B program (community health centers)
Federally Qualified Health Centers (FQHCs) and 340B-participating community clinics dispense Colistin at significantly reduced prices — often $0–$10 — for qualifying patients on a sliding income scale. Find your nearest FQHC at findahealthcenter.hrsa.gov.
State Pharmaceutical Assistance Programs (SPAP)
Many U.S. states run SPAPs for seniors, people with disabilities, and low-income residents — they help cover Colistin not paid for by Medicare or insurance. Notable programs: NY EPIC, PA PACE/PACENET, NJ PAAD, MA Prescription Advantage, CT ConnPACE. Check your state department of health.
ScriptUnlock cash price — from $138
If you don't qualify for free programs, or can't wait 2–6 weeks for PAP approval, ScriptUnlock's pharmacy bidding finds the lowest cash price for Colistin — often cheaper than "discounted" programs without the paperwork, income forms, or eligibility queue.
Income eligibility guide
Most Colistin assistance programs use the Federal Poverty Level (FPL) as the gate. Here's a rough sense of where you might qualify:
| Household size | 200% FPL (typical 340B) | 400% FPL (typical PAP) |
|---|---|---|
| 1 person | ~$30,120 | ~$60,240 |
| 2 people | ~$40,880 | ~$81,760 |
| 3 people | ~$51,640 | ~$103,280 |
| 4 people | ~$62,400 | ~$124,800 |
Approximate 2024 figures, 48 contiguous states. Each program sets its own thresholds — always confirm with the program directly.
Which is fastest?
- ScriptUnlock cash price — minutes
Upload, get bids, pick up same day. Colistin from $138.
- 340B / FQHC — same week
Book an appointment, qualify on sliding scale, fill at the clinic pharmacy.
- State SPAP — 2–4 weeks
Eligibility application, then enrolment, then fills. Worth it long-term.
- Manufacturer PAP — 2–6 weeks
Application + income proof + prescriber signature → free Colistin delivery.
Suggested play: Use ScriptUnlock today to get Colistin this week, while you apply for PAP in parallel. When PAP approves in 2–6 weeks, you switch to free.
Get Colistin this week — from $138
Verified U.S. pharmacies compete for your prescription. No card, no insurance, no membership.
Compare Colistin pricesFree Colistin — FAQ
Can I get Colistin for free?+
Yes — qualifying patients can often get Colistin for free through the manufacturer's Patient Assistance Program (PAP), 340B community health centers, or state pharmaceutical assistance programs. Eligibility typically depends on income (most programs use 200–500% of the federal poverty level), insurance status, and U.S. residency.
What is the Colistin patient assistance program?+
A patient assistance program (PAP) is a free-drug program run by the manufacturer of Colistin for uninsured or underinsured patients who can't afford the medication. You apply with proof of income and a prescriber signature. Approval typically takes 2–6 weeks.
How do I apply for free Colistin?+
Three steps: (1) Find the manufacturer's PAP application on their website or via NeedyMeds.org. (2) Gather income proof (tax return or pay stubs) and your prescriber's signature. (3) Submit and wait 2–6 weeks. If you need Colistin sooner, ScriptUnlock cash price from $138 is available immediately.
What is the cheapest way to get Colistin?+
For qualifying low-income patients, the manufacturer PAP can deliver Colistin at $0. For everyone else, the cheapest immediate path is ScriptUnlock cash price from $138 — pharmacies compete on your prescription. This is usually cheaper than GoodRx and cheaper than most insurance copays.
Is Colistin available through 340B pharmacies?+
Yes — Federally Qualified Health Centers (FQHCs) and 340B-participating community health centers can dispense Colistin at significantly reduced prices to qualifying patients. Find your nearest FQHC at findahealthcenter.hrsa.gov.
Colistin without insurance — pay less
No insurance? No problem. Upload your Colistin prescription and verified pharmacies compete on cash price.
Free for patients. No insurance, no membership, no sign-up required.