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A pen is expensive because it's got single serve packaging. A vial has 1000units and lasts about 2 weeks.
by srtjstjsj 5y ago
A pen is expensive because it's got single serve packaging.
A vial has 1000units and lasts about 2 weeks.
- profile53 5y agoInsulin pens are multi dose as well. Usually last a few days to.m a week each.