? how long can Vetsulin vial remain effective?

CandyH & Catcat

Very Active Member
former users, experienced users, chime on in

packaging says Vetsulin remains effective 42 days from first use

this is either day 55 or day 56 -- I'm wondering how long before I see less effectiveness

anyone have opinions, stories to tell?

I also have a backup vial, has always been refrigerated, hasn't been out nor used in at least three months, was being used before previous user switched to Lantus, is it likely to be effective still ?
 
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