The short version
18 companies supply this market — deep enough that no single failure threatens the supply. The price has jumped 200% in a year, to $0.6665 per unit — sharp rises like this often mean supply is already tightening.
Market view
chlorzoxazone · Tablet
117 marketed package NDCs · 18 active manufacturers
Most dispensed: 250 mg · Tablet · #60 tablets/bottle · 500 mg · Tablet · #100 tablets/bottle · 375 mg · Tablet · #100 tablets/bottle · 750 mg · Tablet · #100 tablets/bottle
Price range and competition
RSS: changes for this drugEvery company selling this drug reports its own price. The line follows the middle of the pack; the shaded band holds the middle half of companies — the wider it is, the more they disagree.
Latest · Sep 2026 — typical price $0.6665 · middle half $0.2117–$2.06 · full range $0.2117–$2.52 · 18 products · 18 companies
ⓘ How this was built
Data sources
- CMS NADAC weekly survey + monthly archives back to 2013 (data.medicaid.gov)
- CMS Federal Upper Limit files (weighted AMP)
- FDA NDC Directory (openFDA) — maker roster
Method
Each month's band spans the NADAC unit prices of every NDC of this drug (min, quartiles, median, max), split into brand and generic cohorts by FDA marketing category. Maker counts come from distinct labelers with the NDC actively listed.
Pipeline and calculations built by Claude (Fable 5) from the public datasets above. Educational only — verify against primary sources before acting.
What changed in the last 90 days
Every detected change for chlorzoxazone, newest first — price moves, shortages, recalls, and manufacturers entering or leaving. Detected by comparing each day’s federal data against the day before.
- ChlorzoxazoneAug 19, 2026Price downNADAC $0.21826 → $0.21167 per unit (-3.02%)
- ChlorzoxazoneAug 19, 2026Price downNADAC $0.21826 → $0.21167 per unit (-3.02%)
- ChlorzoxazoneAug 19, 2026Price downNADAC $0.70264 → $0.6959 per unit (-0.96%)
- ChlorzoxazoneAug 19, 2026Price downNADAC $0.21826 → $0.21167 per unit (-3.02%)
- ChlorzoxazoneAug 19, 2026Price downNADAC $0.21826 → $0.21167 per unit (-3.02%)
- ChlorzoxazoneAug 19, 2026Price upNADAC $0.62491 → $0.66652 per unit (+6.66%)
- ChlorzoxazoneAug 19, 2026Price downNADAC $0.70264 → $0.6959 per unit (-0.96%)
- ChlorzoxazoneAug 19, 2026Price downNADAC $0.21826 → $0.21167 per unit (-3.02%)
- ChlorzoxazoneAug 19, 2026Price upNADAC $0.62491 → $0.66652 per unit (+6.66%)
- ChlorzoxazoneAug 19, 2026Price downNADAC $0.21826 → $0.21167 per unit (-3.02%)
Same drug class
Other molecules FDA puts in Muscle Relaxant, with whether each is in shortage right now. Same class is not the same drug — substitution is a clinical decision, and this is a supply picture, not a recommendation.
- cyclobenzaprine hcl er· 1 maker
- orphenadrine citrate, aspirin and caffeine· 3 makers
- cyclobenzaprine hcl· 7 makers
- cyclobenzaprine· 10 makers
- methocarbamol tablets· 19 makers
- orphenadrine citrate· 24 makers
- carisoprodol· 36 makers
- metaxalone· 41 makers
- cyclobenzaprine hydrochloride· 75 makers
- methocarbamol· 77 makers
Common questions
- Is Chlorzoxazone in shortage right now?
- No. FDA does not currently list Chlorzoxazone in shortage. This page is rebuilt every morning from FDA's shortage database, so a new posting appears here the day it is published.
- Who makes Chlorzoxazone?
- 23 companies have marketed Chlorzoxazone in the last 30 days, according to the FDA NDC Directory. Every manufacturer and package is listed on this page.
- What does Chlorzoxazone cost?
- The typical pharmacy pays about $0.6665 per unit, based on the most recent CMS NADAC survey of actual acquisition costs. That is what the pharmacy pays for the drug itself — not the cash price, and not what an insurer is billed.
All marketed products
Expand a strength to see its dosage forms, then package sizes, then each manufacturer and NDC. Click an NDC for its full detail page.