Buprenorphine HCl, CIII, Injection, 0.3 mg/mL, 5 x 1 mL Single Dose Vials per Carton, Rx Only, For Intramuscular or Intravenous use, Manufactured for: Endo USA, Malvern, PA 19355, NDC 42023-179-05
Crystallization; identified as Buprenorphine free base
Nationwide in the USA.
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=D-0596-2026