Where should unopened insulin be stored?

Where should unopened insulin be stored?

• A. In the refrigerator
• B. On the kitchen counter
• C. In the freezer
• D. In direct sunlight

Answer: (A)

Unopened insulin must be kept cool to preserve its potency. Storing it in the refrigerator (about 2–8°C) protects it from heat and temperature fluctuations that can break it down. Freezing can damage the insulin formulation, and exposure to direct sunlight or warm room temperatures also speeds degradation. So the fridge is the best place for unopened insulin. Once you start using it, follow the manufacturer’s guidance for how long it can be kept at room temperature, but unopened vials or pens stay refrigerated until first use.

Unopened insulin must be kept cool to preserve its potency. Storing it in the refrigerator (about 2–8°C) protects it from heat and temperature fluctuations that can break it down. Freezing can damage the insulin formulation, and exposure to direct sunlight or warm room temperatures also speeds degradation. So the fridge is the best place for unopened insulin. Once you start using it, follow the manufacturer’s guidance for how long it can be kept at room temperature, but unopened vials or pens stay refrigerated until first use.