Why Drug Prices Vary So Much
Prescription drug prices in the U.S. are not regulated, and each pharmacy sets its own cash price independently. For the same 30-day supply of a generic medication, the price can vary 10x or more across nearby pharmacies — metformin costs $4 at Walmart and up to $40 at CVS without a discount card. Brand-name drugs can exceed $1,000 per month at retail.
Understanding what a drug actually costs before you fill your prescription gives you the power to choose the cheapest pharmacy, apply the right discount card, or ask your doctor for a generic alternative. Knowing the average national price for your medication also helps you spot when you're being overcharged.
Our drug cost guides cover the most commonly searched medications, including GLP-1 injectables like Ozempic and Wegovy, statin cholesterol drugs like atorvastatin and Lipitor, blood pressure medications, diabetes drugs like metformin and Jardiance, ADHD medications, and popular generics. Each guide shows the national price range, which pharmacies charge the least, how much a free RxDiff discount card typically saves, and whether manufacturer savings programs are available for brand-name versions.
Drug costs change over time as patents expire, new generics launch, and pharmacy pricing strategies shift. Our guides are updated regularly with current price data pulled from RxDiff's live pharmacy price database covering 70,000+ pharmacy locations nationwide.
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