Definitions | every term is used on this site

The Prescription Pricing Glossary

Drug pricing is deliberately hard to read. These are the words that explain why one pharmacy quotes four times another for the same pill, and each links to where we work it through.

What you are actually buying

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The distinctions that decide whether two prices are even for the same product.

Generics

Medicines containing the same active ingredient as a brand product, approved on evidence that they perform equivalently in the body. Inactive ingredients, appearance and manufacturer differ. The price gap between a generic and its brand is routinely an order of magnitude and is the single largest lever most people have.

Where we cover it
Brand-name

The originator product, sold under a trademark and usually protected from generic competition for a period. Once that protection lapses the brand often keeps its price while generics enter far below it, which is why a long-standing brand price is a poor guide to what the medicine costs.

Where we cover it
Substitution

A pharmacy dispensing a therapeutically equivalent generic in place of the brand written on the prescription. Rules differ by state, some requiring patient notification or consent, and a prescriber can block it. It is the mechanism through which most generic savings actually reach a counter.

Where we cover it
Metformin

A long-established generic used in type 2 diabetes, and one of the clearest illustrations of price dispersion: the same quantity of the same generic can differ several-fold between pharmacies in one town, with no difference in the product.

Where we cover it
Lisinopril

A widely prescribed generic for blood pressure, and another standard reference point for comparing pharmacy pricing precisely because the product is identical everywhere and only the price moves.

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How it gets paid for

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The same prescription has several prices at once. These are the routes, and they do not combine.

Discount card

A programme offering a negotiated cash price outside your insurance. It is not insurance and involves no coverage: you pay the whole discounted amount. It can beat an insured copay, and using it usually means the spend does not count toward your deductible.

Where we cover it
Mail-order

Dispensing by post, generally in 90-day quantities. The saving comes from volume and lower dispensing overhead rather than from a different product, and the trade is lead time: it suits stable long-term medicines and not a new or urgent one.

Where we cover it
SPAP

A State Pharmaceutical Assistance Program: state-run help with drug costs, usually for older adults or people with particular conditions. Eligibility and generosity vary enormously by state, and these programmes are among the most under-claimed forms of assistance available.

Where we cover it
NADAC

The National Average Drug Acquisition Cost: a published survey of what pharmacies actually PAY for a drug. It is the closest thing to a public wholesale benchmark, and comparing a quoted price against it shows the size of the markup rather than just the size of the price.

Where we cover it

The rules around it

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Regulation that changes what a pharmacy may charge you or tell you.

Monitoring program

A state prescription drug monitoring programme: a database recording dispensed controlled substances, which prescribers and pharmacists consult. It is a clinical and regulatory safeguard rather than a pricing tool, and it is why controlled prescriptions travel differently from ordinary ones.

Where we cover it
Cheapest pharmacy

A phrase with no stable answer. Which pharmacy is cheapest depends on the specific drug, the quantity, the discount programme and the day, and the ranking reorders drug by drug. Any list presenting one permanent winner is describing a snapshot rather than a rule.

Where we cover it

Commonly confused

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Pairs that sound like the same thing at the counter and are not. Each one changes what you pay or whether you can use it.

Discount card vs Insurance

A discount card gives you a negotiated CASH price and is not insurance: nothing is covered, you pay the full discounted amount, and it usually does not count toward a deductible. They also do not stack, so at the counter it is a choice between them rather than a combination, and the cheaper one is not always the insured one.

Where this bites
Generics vs Brand-name

Same active ingredient, approved on evidence of equivalent performance in the body; different inactive ingredients, appearance and price. The gap is routinely an order of magnitude. The difference that matters clinically is usually none, and the difference that matters financially is usually everything.

Where this bites
Substitution vs Generics

A generic is the PRODUCT. Substitution is the ACT of a pharmacy dispensing one in place of the brand on the prescription. A generic can exist and still not reach you, because substitution rules vary by state and a prescriber can block it.

Where this bites
NADAC vs Cheapest pharmacy

NADAC is a published benchmark of what pharmacies PAY. Cheapest pharmacy is about what YOU pay, and it changes by drug, quantity and day. Comparing a quote against the benchmark tells you the size of the markup, which is more durable information than any ranking of storefronts.

Where this bites
Mail-order vs Discount card

Two different levers that people treat as one saving. Mail-order lowers cost through 90-day volume and lower overhead; a discount card lowers it by negotiating a cash price. They apply to different situations, and mail-order is a poor fit for anything new or urgent whatever it saves.

Where this bites
SPAP vs Discount card

A state assistance programme is public support with eligibility rules, often means-tested or age-based, and can cover a substantial share of cost. A discount card is a commercial negotiated price available to anyone. The first is much more valuable to those who qualify and is heavily under-claimed.

Where this bites

One caveat

These describe how the terms are used in United States prescription pricing. They are not medical advice and not a recommendation about any medication. Never change how you take a prescription based on price. Talk to your prescriber or pharmacist.