neostigmine Methylsulfate, 1 mg per mL, 3 mg per 3 mL, 3 mL Total Volume in a syringe, For IV Use, Rx only, PharMEDium, Product code 2R3551.
Stability Data Does Not Support Expiry: potential loss of potency in drugs packaged and stored in syringes.
Nationwide
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=D-0084-2017