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Insulin Pens and Cartridges

Published: April 17, 2009

To B.B., Mosinee, Wisconsin: Colored insulin solutions would be expensive to test and produce. If you are having trouble measuring insulin in a syringe, talk to your doctor about using an insulin pen or cartridge. Many types of insulin are available in these forms. Most pens have a dial to set the correct dose. Then the pen automatically fills and its attached needle injects the insulin under the skin.

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