Updated April 2026 · CMS Medicare Part D
Drug Classes, Compare Prices by Category
Prescription drug prices vary dramatically within the same therapeutic class. A generic statin can cost a few dollars per claim while a PCSK9 inhibitor — in the same lipid-lowering category — can cost hundreds. Browse 11 drug classes covering 99 tracked medications, with per-claim averages drawn from the CMS Medicare Part D Drug Spending Dashboard and patent status from the FDA Orange Book.
Why Class-Level Comparison Beats Drug-Level Search
Most prescription costs come down to a single decision: branded versus generic within the same class. A patient on a brand statin spending hundreds per month can often switch to an A-rated generic in the same class for under ten dollars, with the same expected clinical benefit. That swap is invisible if you search drug-by-drug; it jumps out when you look at the class as a whole.
The class pages line every tracked drug up against its peers and surface (a) the cheapest generic option, (b) the most expensive brand-only option, and (c) the spread between them. They do not recommend a switch — that is a clinical decision — but they show you exactly how big the price difference is and which generic is the natural starting point for a conversation with your prescriber.
Browse 11 Drug Classes
Statins (Cholesterol-Lowering)
HMG-CoA reductase inhibitors that lower LDL cholesterol. The most widely prescribed drug class in America.
Within statins (cholesterol-lowering), prices range from $16.00 to $757.00 per claim — roughly a 47× spread between the cheapest and the priciest option in the same class.
Blood Pressure Medications (Antihypertensives)
Multiple drug classes treat hypertension: ACE inhibitors, ARBs, calcium channel blockers, beta-blockers, and diuretics. Most are available as cheap generics.
Within blood pressure medications (antihypertensives), prices range from $6.00 to $144.00 per claim — roughly a 24× spread between the cheapest and the priciest option in the same class.
Diabetes Medications
Includes insulin, GLP-1 receptor agonists, SGLT2 inhibitors, DPP-4 inhibitors, and metformin. The highest-growth drug class by Medicare spending.
Within diabetes medications, the cheapest option costs $4.00 per claim while the most expensive costs $685.00 — a spread of more than 171× between clinically related drugs.
GLP-1 Receptor Agonists (Weight Loss & Diabetes)
The most talked-about drug class in America. GLP-1s treat Type 2 diabetes and obesity, with blockbuster drugs like Ozempic, Wegovy, and Mounjaro.
Within glp-1 receptor agonists (weight loss & diabetes), prices run from $149.00 to $867.00 per claim — a 5.8× spread.
Antidepressants (SSRIs, SNRIs & Newer Agents)
Selective serotonin reuptake inhibitors (SSRIs), serotonin-norepinephrine reuptake inhibitors (SNRIs), and newer treatments for depression and anxiety.
Within antidepressants (ssris, snris & newer agents), the cheapest option costs $4.00 per claim while the most expensive costs $1,839.00 — a spread of more than 460× between clinically related drugs.
Blood Thinners (Anticoagulants)
Direct oral anticoagulants (DOACs) and traditional blood thinners that prevent blood clots, stroke, and pulmonary embolism.
Within blood thinners (anticoagulants), the cheapest option costs $8.00 per claim while the most expensive costs $510.00 — a spread of more than 64× between clinically related drugs.
Biologics for Autoimmune Diseases
TNF inhibitors, IL inhibitors, and JAK inhibitors used to treat rheumatoid arthritis, psoriasis, Crohn's disease, and other autoimmune conditions.
Within biologics for autoimmune diseases, prices run from $1,200.00 to $7,763.00 per claim — a 6.5× spread.
Cancer Immunotherapy & Targeted Therapy
Checkpoint inhibitors, kinase inhibitors, and other precision cancer treatments. The highest-cost drug class by average price per claim.
Within cancer immunotherapy & targeted therapy, prices run from $6,500.00 to $18,176.00 per claim — a 2.8× spread.
Asthma & COPD Inhalers
Inhaled corticosteroids, long-acting bronchodilators, combination inhalers, and biologic add-on therapies for asthma and chronic obstructive pulmonary disease.
Within asthma & copd inhalers, the cheapest option costs $25.00 per claim while the most expensive costs $2,720.00 — a spread of more than 109× between clinically related drugs.
Multiple Sclerosis (MS) Treatments
Disease-modifying therapies (DMTs) that slow MS progression, including infusions, oral medications, and injectables.
Within multiple sclerosis (ms) treatments, prices range from $800.00 to $23,635.00 per claim — roughly a 30× spread between the cheapest and the priciest option in the same class.
HIV Antiretrovirals
Single-tablet regimens (STRs) and combination antiretroviral therapies that suppress HIV viral load to undetectable levels.
Within hiv antiretrovirals, prices run from $2,800.00 to $3,746.00 per claim — a 1.3× spread.
How These Class Comparisons Are Built
DrugPrice maps every drug in the dataset to a therapeutic class using the FDA pharmacologic class system and clinical references. For each class we then pull (a) the average cost per claim from CMS Medicare Part D, (b) generic-versus-brand status from the FDA Orange Book, and (c) the patient-population data Medicare publishes alongside its spending file. The cheapest option is the lowest per-claim drug with an A-rated generic available; the most expensive is the highest per-claim drug in the class. Read the full DrugPrice methodology for how the joins and edge cases are handled.
DrugPrice is not medical advice. The class pages describe what the public pricing data shows; they do not recommend a specific treatment, switch a generic for a brand on your behalf, or substitute for a conversation with your prescriber and pharmacist.
Frequently Asked Questions
What is a drug class?
A drug class groups medications that share a mechanism of action — for example, statins all inhibit HMG-CoA reductase, ACE inhibitors all block angiotensin-converting enzyme. Drugs in the same class typically treat the same conditions, so swapping among them is often clinically reasonable when supported by your prescriber. Class is the most useful unit for cost comparison because price differences within a class often reflect patent status and marketing rather than meaningful clinical advantage.
Why do drugs in the same class have such different prices?
The single biggest driver is whether a drug is generic or still under patent. A generic statin can cost a few dollars per claim while a brand-only PCSK9 inhibitor in the same lipid-lowering category runs hundreds. Within DrugPrice, the widest current spread is in Antidepressants (SSRIs, SNRIs & Newer Agents), where the cheapest option costs $4.00 per claim and the most expensive costs $1,839.00. Other drivers include FDA exclusivity windows, biosimilar adoption rates, and the rebate flow between manufacturers and pharmacy benefit managers.
Is it safe to switch to a cheaper drug in the same class?
Often yes, but never on your own. Drugs in the same class are usually clinically interchangeable for most patients — that is what allows guideline-recommended generic substitutions. But individual response, side-effect profiles, kidney or liver function, and drug interactions all matter. DrugPrice surfaces the cheapest clinically equivalent option as a starting point for a conversation with your prescriber and pharmacist, not as a recommendation to switch unilaterally.
Where does the per-claim cost figure come from?
Average cost per claim is computed directly from the CMS Medicare Part D Drug Spending Dashboard, which publishes total spending and total claims for every drug Medicare paid for in the most recent year. Dividing one by the other gives a real-world average paid price — not list price, not cash price, but what Medicare and its enrollees actually paid. The DrugPrice dataset was last refreshed April 2026.
Are these the same prices I would pay at a pharmacy?
No. Per-claim averages reflect Medicare Part D negotiated pricing after rebates flow through the plan. Your cash price, your commercial-insurance copay, your Medicaid co-pay, and the price at Mark Cuban Cost Plus Drugs or Amazon Pharmacy are all different numbers. The class pages let you spot which drugs are likely cheap (generics with low Medicare-paid averages) and which are likely expensive (brand-only with high averages); the actual counter price for your prescription depends on your specific channel.
Sources: CMS Medicare Part D Drug Spending Dashboard, FDA Orange Book, FDA pharmacologic class system. All data is U.S. government public domain. Cite as: "DrugPrice, April 2026 reading. Data: CMS Part D & FDA."
Last updated 2026-04-06 · 11 classes, 99 drugs tracked.