Clonazepam vs Diazepam — Cost, Coverage & Plan Comparison

Pick the drugs you want to compare.

Up to 4 drugsCross-class or same-class

Start with the molecules your plan spends the most on. Most useful comparisons live within the same therapeutic class — switching across classes requires deeper clinical review.

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Drug 2

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Drug 4 (optional)

Side by side, line by line.

Federal data onlyNo PBM pricing assumed

Compare across

11 dimensions

Benzodiazepine

Clonazepam

Brand: Klonopin

First FDA approval: 1975-06-02

Benzodiazepine

Diazepam

Brand: Valium

First FDA approval: 1963-11-15

Lowest NADACAcquisition cost floor across all NDCs

$0.021Per unit

Average NADACAcross all dosage forms and strengths

$0.298Up to $3.88

$89.64Up to $366.86

Generic manufacturersActive ANDA holders — FDA Orange Book

1139 total ANDAs filed

1635 total ANDAs filed

Annualized Part D spendCY2024 — CMS Part D Spending Dashboard

$113.3MFull year

$75.9MFull year

Part D claims (CY24)Total fills, all strengths

13.2M2.4M beneficiaries

4.5M1.6M beneficiaries

Avg cost per claimCalculated: total spend ÷ total claims

$9Per claim, all NDCs

$17Per claim, all NDCs

Part D plans surveyed2026 plan year — CMS Formulary file

329Across CMS plan year

Prior-authorization frictionPlan-NDC pairs requiring PA

56Minimal friction

965Substantial friction

Step therapy appliedPlan-NDC pairs requiring step therapy

10Limited friction

0None

FDA shortage statusLive cross-reference vs FDA Drug Shortage Database

Active shortageSee drug profile

NoneClear

Generic availableFDA Orange Book

Yes11 manufacturers

Yes16 manufacturers