Understanding the difference between generic and brand-name drugs, and how your insurance covers each, can save you significant money. Insurance plans strongly prefer generics, placing them on the lowest tiers with the cheapest copays. Brand-name drugs cost more out of pocket, and some plans require step therapy or prior authorization before covering them.

Key Facts

Generic drugs contain the same active ingredients, dosage, and strength as brand-name drugs
Insurance copays for generics are typically 60% to 80% less than brand-name copays
Plans can require generic substitution when a generic equivalent is available
DAW (Dispense As Written) codes allow doctors to specify brand-name when medically necessary
Biosimilars are the "generic" equivalent for biologic drugs and are preferred on most formularies
About 90% of prescriptions filled in the U.S. are generics

Open Enrollment Reminder

ACA marketplace enrollment runs November 1 to January 15. Medicare Annual Enrollment is October 15 to December 7. Compare formularies for your medications before choosing a plan.

Can't Afford Your Medication?
Find Patient Assistance Programs
Search manufacturer PAPs and nonprofit programs on OmniRx
Compare Cash Prices
Find the Lowest Pharmacy Price
Compare prices at pharmacies near you on RxGrab

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 Checker

Frequently Asked Questions

Are generic drugs really the same as brand-name?

Yes. The FDA requires generic drugs to have the same active ingredient, strength, dosage form, and route of administration as the brand-name product. They must also demonstrate bioequivalence, meaning they work the same way in your body. Inactive ingredients (fillers, dyes) may differ, which rarely matters clinically but can affect patients with specific allergies.

Can I request brand-name instead of generic?

Yes, but you will typically pay more. Your doctor can write a prescription for brand-name only (using DAW codes), and your plan may cover it at a higher tier copay. In some cases, you may pay the full difference between brand and generic costs. Ask your plan about brand-name coverage policies.

When should I consider brand-name over generic?

Consider brand-name if: you have allergies to specific inactive ingredients in generic versions, you experience different effects switching between manufacturers, your doctor has clinical reasons for brand-name (documented in your chart), or the drug has a narrow therapeutic index where small differences matter (e.g., certain thyroid and seizure medications).

Related Resources

Get Formulary and Coverage Updates

Subscribe to receive alerts on formulary changes, new drug approvals, and insurance coverage updates.