Amoxicillin is a widely prescribed generic antibiotic covered at the lowest tier on all insurance formularies. As one of the cheapest prescription medications available, amoxicillin costs pennies per dose. Most pharmacies offer it for $4 to $10 without insurance, making it accessible to virtually everyone regardless of coverage status.
Key Facts
Check Your Specific Plan's Formulary
Coverage varies by plan. Use our formulary checker tool to look up your exact copay and restrictions.
Open Formulary CheckerSources and standards behind this page
Drug coverage in the United States is governed by published rules rather than by any one insurer's summary, and the sources below are the primary ones. They are linked so a reader can check a claim without taking this page's word for it.
- FDA Orange Book publishes the therapeutic-equivalence ratings that decide whether a generic may be substituted for a brand-name drug.
- FDA generic drug facts sets out what "generic equivalent" means and what a manufacturer must prove.
- CMS prescription drug coverage defines the rules a Medicare drug plan formulary must follow and how it may change mid-year.
- Medicare.gov drug coverage (Part D) states what a Part D plan is required to offer a member.
- CMS prescription drug appeals documents the coverage-determination and exception process when a drug is denied.
This page describes how coverage and formularies work. It is not medical advice, and a reader's own plan documents and prescriber decide what applies to them.
Frequently Asked Questions
Many insurance plans offer amoxicillin at $0 copay. Even plans with copays rarely charge more than $3 to $5. Amoxicillin is one of the most affordable prescription drugs in existence. You can also purchase it for $4 without insurance at many retail pharmacies.
No. Generic amoxicillin is available for $4 to $10 at most retail pharmacies without insurance. Pharmacy discount programs and apps like GoodRx can further reduce costs. A typical 10-day course of amoxicillin costs less than a fast food meal.
Yes. Amoxicillin oral suspension (liquid) for children is covered on Tier 1 of all insurance plans. Pediatric amoxicillin is one of the most prescribed medications in the country and is universally affordable. No prior authorization is ever required.
Related Resources
- UnitedHealthcare Formulary 2026
- Medicaid Drug Coverage 2026
- Blue Cross Blue Shield Formulary 2026
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