The short version
5 companies supply this market — a reasonable cushion if one runs into trouble.
Market view
chlorzoxazone · Powder
13 marketed package NDCs · 5 active manufacturers
Most dispensed: 250 mg · Tablet · #60 tablets/bottle · 500 mg · Tablet · #100 tablets/bottle · 750 mg · Tablet · #100 tablets/bottle · 375 mg · Tablet · #100 tablets/bottle
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.