Pen needle guides

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

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NovoFine 32G 6mm pen needles for Norditropin FlexPro growth hormone pen
Pen Needles for Norditropin FlexPro: Which Fit, What Size, and How Many to Buy

Norditropin FlexPro is designed for NovoFine or NovoTwist needles up to 8mm. Here's which pen needles fit, what length to choose, and how many to keep on hand.