Drug
Who makes naltrexone?
2 companies list naltrexone as a human prescription drug, including under the names VIVITROL. Forms: kit.
Labellers from the openFDA NDC Directory. A labeller is the firm named on the label, not necessarily the site that made the product, and a listing is not an FDA approval. Data as of 24 Sept 2026. Methodology
Companies listing naltrexone
| Company | Forms | Application | NDCs | Registered sites |
|---|---|---|---|---|
| Alkermes, Inc.United States | kit | NDANDA021897 | 2 | 2 |
| Amneal Pharmaceuticals NY LLC | kit | NDANDA021897 | 1 | 0 |
Bulk ingredient listings
- Arevipharma GmbHGermany · 1 NDC
- NURAY CHEMICALS PRIVATE LIMITEDIndia · 1 NDC
- S.A.L.A.R.S. SOCIET AZIONARIA LABORATORI ALCALOIDI RIFORNIMENTI SANITARI S.P.A. · 1 NDC
- STHREE CHEMICALS PRIVATE LIMITEDIndia · 1 NDC
- Saneca Pharmaceuticals a.s.Slovakia · 1 NDC
- SpecGx LLCUnited States · 1 NDC
Orange Book patents
1 unexpired patent lists naltrexone as the active ingredient, expiring between Oct 2029 and Oct 2029. Application holder: ALKERMES INC.
Enquiry
Common questions
- Who makes naltrexone?
- 2 companies list naltrexone as a human prescription drug in the openFDA NDC Directory, led by Alkermes, Inc., Amneal Pharmaceuticals NY LLC. Each is the labeller, the firm named on the label; the product may be made at a site registered to another company.
- Who supplies naltrexone active ingredient?
- 6 companies list naltrexone as a bulk ingredient, including Arevipharma GmbH, NURAY CHEMICALS PRIVATE LIMITED, S.A.L.A.R.S. SOCIET AZIONARIA LABORATORI ALCALOIDI RIFORNIMENTI SANITARI S.P.A., STHREE CHEMICALS PRIVATE LIMITED.