Pen needle guides

Plain-English answers about pen needle sizes, injection comfort, travel, storage and which needles fit your pen.

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Priming Your Pen: Why the “Air Shot” Step Matters (and How to Do It Right)
Priming Your Pen: Why the “Air Shot” Step Matters (and How to Do It Right)

What is pen priming, and why does that small “air shot” step matter before you inject? A clear guide to priming, when to do it, and common mistakes.