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The pen needle market is expected to grow at a CAGR of 11.28% over the forecast period to reach a total market size of US$2,371.768 million by 2025, increasing from US$1,249.021 million in 2019. Pen needles use injection pens to deliver injectable medications into the body. These devices contain a hollow needle with a plastic hub attached to the injection pens, which are of varying lengths and diameter.