Last updated: April 23, 2026
Who Supplies Zanaflex (Tizanidine) to the Market?
What products does Zanaflex cover?
Zanaflex is the brand name for tizanidine (alpha-2 adrenergic agonist, used for spasticity). The branded product historically appears as:
- Zanaflex Tablets (tizanidine hydrochloride; oral)
- Zanaflex Capsules and/or Zanaflex Capsules with different label strengths (brand portfolio has varied by market and time)
Who manufactures Zanaflex?
Zanaflex is manufactured and marketed by:
- Acorda Therapeutics (brand owner historically associated with commercialization in the US)
For market access and distribution, branded prescription products are typically supplied through:
- Wholesale distributors (pharmacy supply chain)
- Direct-to-wholesale or contract manufacturing networks supporting finished-goods availability
Which suppliers matter for procurement and compliance?
For investors, formulary strategy, or R&D sourcing, “suppliers for Zanaflex” breaks into two practical tiers: finished-dose supply and ingredient (API) supply.
Finished-dose (drug product) suppliers
Finished-dose availability depends on the current contract manufacturing footprint behind the marketed finished-goods package. In the US supply chain, procurement typically occurs via:
- National wholesalers supplying pharmacies and hospitals
- Direct accounts for large systems
Because finished-dose sourcing can change by lot, time, and label strength, the only procurement-grade “supplier list” that holds up for diligence is one tied to the current US label/manufacturer-of-record and listing data (typically controlled by the brand owner and its supply chain filings).
API and intermediate suppliers (tizanidine)
Tizanidine API supply commonly relies on:
- Specialized API manufacturers with regulatory history for CNS-active compounds
- Multi-step synthesis with controlled intermediates
In diligence workflows, API sourcing is validated using:
- DMF/RLD linkage in regulatory filings
- audit status and GMP inspection history for the specific site
What to use as the diligence-grade supplier list
For “suppliers” that can be used in a business decision (pricing, risk, contract manufacturing, or reverse engineering of supply chain), the supplier list must be derived from one of the following:
- US FDA Drug Listing / label “manufactured for” / “distributed by” statements
- FDA Orange Book reference product listing (brand-to-application mapping)
- FDA device-like analog does not apply here; instead, FDA pharmaceutical listings and filings apply
- DMF/ASMF holder-to-site mapping for tizanidine API (site-specific)
Zanaflex supplier ecosystem: practical mapping
The supplier picture is typically:
- Brand owner / marketer: sets commercial strategy and label rights (Acorda historically in the US)
- Finished-dose manufacturer of record: responsible for batch release for each NDC/strength/package
- API manufacturer(s): supplies tizanidine API to the finished-dose manufacturer under GMP controls
- Wholesalers / distribution partners: move finished goods to pharmacies and institutions
Table: Supplier categories you need for Zanaflex
| Supplier category |
What you buy |
What determines “the right supplier” |
Primary proof source |
| Brand owner/marketer |
Marketing authorization and branded distribution |
Label rights and supply chain governance |
US prescribing info / labeling |
| Finished-dose manufacturer (manufacturer of record) |
Tablets/capsules for specific NDC/strengths |
Lot-level GMP release responsibility |
Label “manufactured by” / NDC listing |
| API manufacturer(s) (tizanidine) |
Tizanidine API or key intermediates |
DMF/ASMF site authorization, GMP, inspection outcomes |
FDA DMF/ASMF linkage |
| Wholesaler/distributor |
Procurement and logistics |
Network coverage, inventory depth, contract terms |
Wholesale distribution records |
What this means for investors and procurement
- If you need a single-name supplier list you can contract with, focus on finished-dose manufacturer-of-record for the specific NDC(s).
- If you need API sourcing or risk mapping, focus on tizanidine API DMF/ASMF holder and the actual manufacturing site rather than a generic company name.
Key Takeaways
- Zanaflex is a branded tizanidine product; sourcing depends on finished-dose manufacturer-of-record and tizanidine API DMF/ASMF site mapping, plus distributor channels.
- The brand owner historically associated with Zanaflex in the US is Acorda Therapeutics.
- A diligence-grade “supplier list” must tie to current label/NDC and regulatory filing linkage, not generic industry knowledge.
FAQs
1) Who is the brand owner for Zanaflex?
Acorda Therapeutics is the US brand owner historically associated with Zanaflex.
2) Are Zanaflex suppliers the same for every strength and package?
No. Finished-dose supply and manufacturer-of-record can vary by NDC/strength/package.
3) Who actually manufactures the tablets or capsules?
The finished-dose manufacturer of record listed on the Zanaflex label for each NDC/strength is the procurement-grade manufacturing entity.
4) Who supplies the tizanidine API?
Tizanidine API is supplied by companies authorized via FDA DMF/ASMF-linked filings to the finished-dose manufacturer; API supply must be validated at the site level.
5) How do pharmacies and hospitals get Zanaflex?
Through wholesale distributors and direct distribution contracts, with procurement governed by each institution’s purchasing framework.
References
[1] U.S. Food and Drug Administration. Orange Book: Approved Drug Products with Therapeutic Equivalence Evaluations.
[2] U.S. Food and Drug Administration. Drugs@FDA: FDA-Approved Drugs.
[3] Zanaflex (tizanidine) prescribing information and label information (manufacturer/distributor statements), FDA label repository.
