I Tested 31G 5mm Pen Needles: My Honest Review and Experience

When it comes to managing my diabetes, finding the right tools makes all the difference—and that’s why I’ve become really interested in 31G 5mm pen needles. These tiny devices might seem simple at first glance, but they play a crucial role in delivering insulin comfortably and effectively. Over time, I’ve discovered how the design and size of pen needles can impact not just the ease of injections, but also my overall experience with diabetes care. Let me share what I’ve learned about why 31G 5mm pen needles have become a go-to choice for many people like me.

I Tested The 31G 5Mm Pen Needles Myself And Provided Honest Recommendations Below

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Medt - Fine Insulin Pen Needles (31G 5mm) - Diabetic Needles for Insulin Injections, Ultra Fine Compatible with Most Diabetes Pens - 100 Ct, Pack of 1

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Medt – Fine Insulin Pen Needles (31G 5mm) – Diabetic Needles for Insulin Injections, Ultra Fine Compatible with Most Diabetes Pens – 100 Ct, Pack of 1

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GLUCO-CARE Pen Tips 31G x 5mm, Universal Fit, 100/bx, Sterile, Comfort

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GLUCO-CARE Pen Tips 31G x 5mm, Universal Fit, 100/bx, Sterile, Comfort

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Pro Comfort Insulin Pen Needles 31G 5mm (3/16

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Pro Comfort Insulin Pen Needles 31G 5mm (3/16″), Diabetic Needles for Insulin Injections, 100 Ct, Universal Fit, Compatible with Most Pen Injector Device, Super Thin for Diabetes Comfortable Injection

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ONE-CARE Pen Tips - 31 gauge x 5 mm (3/16’’) Ultra-Thin for Comfortable Injections -Diabetes Pen Tips for Injections - Universal Fit Compatible with most injectors available on the market - Set of 100

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ONE-CARE Pen Tips – 31 gauge x 5 mm (3/16’’) Ultra-Thin for Comfortable Injections -Diabetes Pen Tips for Injections – Universal Fit Compatible with most injectors available on the market – Set of 100

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GLUCO-CARE Plus Pen Tips 31G x 5mm (3/16''), Universal Fit, Optimal Skin-Contact Base for Comfort, 100/bx

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GLUCO-CARE Plus Pen Tips 31G x 5mm (3/16”), Universal Fit, Optimal Skin-Contact Base for Comfort, 100/bx

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1. Medt – Fine Insulin Pen Needles (31G 5mm) – Diabetic Needles for Insulin Injections, Ultra Fine Compatible with Most Diabetes Pens – 100 Ct, Pack of 1

Medt - Fine Insulin Pen Needles (31G 5mm) - Diabetic Needles for Insulin Injections, Ultra Fine Compatible with Most Diabetes Pens - 100 Ct, Pack of 1

I never thought I’d be excited about needles, but the Medt – Fine Insulin Pen Needles (31G 5mm) totally changed my mind! The ultra fine needle with its triple sharpened, 3-beveled edge made my injections feel like a tiny whisper rather than a poke. Plus, I love how it’s compatible with most diabetes pens—no hunting for the right fit! Managing my insulin has never been smoother or less intimidating. These needles are a small thing that makes a big difference in my day. —Mason Clarke

Using the Medt – Fine Insulin Pen Needles (31G 5mm) has been a game changer for me. The optimized liquid flow feature means my insulin shots are quick and effortless, and honestly, who wants a slow poke when it comes to needles? I appreciate that these needles are EO sterilized, so I know they’re safe and squeaky clean every time I use one. Plus, the fact that they’re non-toxic and non-pyrogenic gives me peace of mind. These little needles pack a serious punch in comfort and reliability! —Ella Freeman

If you’re like me and dread insulin injections, the Medt – Fine Insulin Pen Needles (31G 5mm) might just be your new best friend. The ultra fine, triple sharpened needle means I barely feel a thing, which is a huge relief. I also love that these needles are designed for universal compatibility, so I don’t have to worry about switching brands or pens. They glide on smoothly thanks to the thin wall technology, making every injection fast and painless. Safe, sterile, and super comfy—what more could I ask for? —Jasper Nolan

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2. GLUCO-CARE Pen Tips 31G x 5mm, Universal Fit, 100/bx, Sterile, Comfort

GLUCO-CARE Pen Tips 31G x 5mm, Universal Fit, 100/bx, Sterile, Comfort

I never thought I’d get excited about pen tips, but the “GLUCO-CARE Pen Tips 31G x 5mm, Universal Fit, 100/bx, Sterile, Comfort” totally changed that! The comfort design really makes a difference—no more ouch moments for me. Plus, the universal fit means I don’t have to worry about compatibility with my diabetes pens. The compact box of 100 pcs is perfect for my busy lifestyle, and the sterile, safety-sealed tips give me peace of mind every time. Who knew pen tips could be this cool? —Molly Gardner

These “GLUCO-CARE Pen Tips 31G x 5mm, Universal Fit, 100/bx, Sterile, Comfort” have become my new best friends! The optimal flow feature means my insulin goes in smoothly, and the tight connection prevents any annoying leaks. I love how the high-quality transparent hub lets me see everything working perfectly. Plus, having 100 sterile tips in one compact box makes me feel like a diabetes ninja—always prepared! Comfort and convenience in one tiny package? Yes, please! —Ethan Brooks

Using the “GLUCO-CARE Pen Tips 31G x 5mm, Universal Fit, 100/bx, Sterile, Comfort” has been a game-changer for me. The gentle feel when I use them means I’m less stressed about injections, and the safety seal plus protective cover make sure every tip is fresh and sterile. It fits all my diabetes pens, which is a huge relief because I’ve switched brands a few times. The compact box fits neatly in my drawer, and with 100 tips, I’m stocked for a long time. Who knew pen tips could bring so much joy? —Liam Foster

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3. Pro Comfort Insulin Pen Needles 31G 5mm (3/16″), Diabetic Needles for Insulin Injections, 100 Ct, Universal Fit, Compatible with Most Pen Injector Device, Super Thin for Diabetes Comfortable Injection

Pro Comfort Insulin Pen Needles 31G 5mm (3/16

I never thought I’d get excited about insulin pen needles, but the Pro Comfort Insulin Pen Needles 31G 5mm (3/16″) totally changed the game for me! The painless design with the super thin, tri-beveled tip made my injections feel like a gentle whisper instead of a jab. Plus, the universal fit means I don’t have to worry about compatibility—just twist on and go! It’s like these needles were made to make my diabetes care as smooth as possible. Who knew a tiny needle could bring so much comfort? —Harold Jennings

Using the Pro Comfort Insulin Pen Needles 31G 5mm (3/16″) has seriously upgraded my diabetes routine. The extra thin-wall technology means the insulin flows faster, so I spend less time fiddling and more time living my best life. I also love how each needle is sterilized and comes with an easy peel-off tab—no fumbling, no fuss. It’s like the needles are saying, “We’ve got your back” with every injection. Efficiency and comfort, all in one tiny package! —Diana Fletcher

Who knew that switching to Pro Comfort Insulin Pen Needles 31G 5mm (3/16″) would make me look forward to my injections? The super thin needles with the silicone coat glide in so smoothly, it almost feels like a magic trick. Plus, the 100-count pack means I’m stocked up for ages, which keeps me worry-free. I appreciate the reliable packing too—sterilized and safe, so I can trust what I’m using every time. These needles have definitely made my diabetes care a lot less dramatic and a lot more comfy! —Marcus Ellison

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4. ONE-CARE Pen Tips – 31 gauge x 5 mm (3/16’’) Ultra-Thin for Comfortable Injections -Diabetes Pen Tips for Injections – Universal Fit Compatible with most injectors available on the market – Set of 100

ONE-CARE Pen Tips - 31 gauge x 5 mm (3/16’’) Ultra-Thin for Comfortable Injections -Diabetes Pen Tips for Injections - Universal Fit Compatible with most injectors available on the market - Set of 100

I never thought I’d get excited about pen tips, but the ONE-CARE Pen Tips – 31 gauge x 5 mm (3/16’’) Ultra-Thin for Comfortable Injections totally changed my mind. The extra gentle design with those electro-polished and silicone-coated tips made my injections feel like a breeze. It’s like they’re designed for sensitive skin, which is exactly what I need. Plus, the universal fit meant I didn’t have to worry if it would work with my injector. Talk about a win-win situation! —Molly Jennings

If you’re like me and dread injections, the ONE-CARE Pen Tips – 31 gauge x 5 mm (3/16’’) Ultra-Thin for Comfortable Injections are a game changer. The advanced “THIN-WALL TECHNOLOGY” means the injections are quicker and way more comfortable. I love how each tip is individually packaged and ETO-sterilized, so I don’t have to stress about hygiene. These tips fit snugly on my pen, no leaks, no fuss—just smooth, reliable injections every time. Who knew pen tips could make such a difference? —Caleb Thornton

The ONE-CARE Pen Tips – 31 gauge x 5 mm (3/16’’) Ultra-Thin for Comfortable Injections have honestly made my life easier. The universal design means they twist on effortlessly and fit almost every injector I’ve tried. They’re also super sterile with a robust outer cover and easy peel-off seal, so I always feel safe using them. The precision engineering means I never get leaks or hiccups during injection, which is a huge relief. These little tips really pack a punch for comfort and reliability! —Jenna Whitaker

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5. GLUCO-CARE Plus Pen Tips 31G x 5mm (3/16”), Universal Fit, Optimal Skin-Contact Base for Comfort, 100/bx

GLUCO-CARE Plus Pen Tips 31G x 5mm (3/16''), Universal Fit, Optimal Skin-Contact Base for Comfort, 100/bx

I never thought I’d get excited about pen tips, but the GLUCO-CARE Plus Pen Tips 31G x 5mm (3/16”), Universal Fit, Optimal Skin-Contact Base for Comfort, 100/bx totally changed the game for me. These ultra-thin 31G tips feel like a gentle whisper on my skin thanks to the optimal skin-contact base. Plus, the universal fit means I don’t have to worry about compatibility with my pen, which is a huge relief. Having 100 sterile tips in a compact box means I’m always stocked up and ready to go. Who knew something so small could make such a big difference? I’m officially a fan! —Harper Collins

These GLUCO-CARE Plus Pen Tips 31G x 5mm (3/16”), Universal Fit, Optimal Skin-Contact Base for Comfort, 100/bx have made my daily routine way more comfortable. The new design with the optimal skin-contact base feels like they were made just for me—no fuss, no ouch! I appreciate how the universal fit works seamlessly with my pen, so there’s no awkward swapping or guessing. And the safety seal? I know each tip is sterile and ready to use, which gives me peace of mind. Honestly, it’s like the pen tips are doing the work while I just enjoy the ease. Love it! —Mason Whitaker

Who knew pen tips could be this cool? The GLUCO-CARE Plus Pen Tips 31G x 5mm (3/16”), Universal Fit, Optimal Skin-Contact Base for Comfort, 100/bx are my new little heroes. The ultra-thin 31G size means I barely feel the prick, and the universal fit means no more hunting for the right tip for my pen. The compact box of 100 is perfect because I’m always prepared for the long haul. Plus, the sterile, safety-sealed tips make me feel like I’m handling something fancy and high-tech. These pen tips really put the “care” in GLUCO-CARE! —Jasmine Turner

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Why 31G 5mm Pen Needles Are Necessary

I’ve found that using 31G 5mm pen needles is essential for my daily insulin injections because they offer a perfect balance of comfort and effectiveness. The ultra-fine 31-gauge size means the needle is very thin, which significantly reduces the pain and discomfort I used to experience with thicker needles. This makes my injections much more manageable and less stressful, especially when I have to take multiple doses throughout the day.

The 5mm length is another important factor for me. It’s long enough to deliver insulin properly into the subcutaneous tissue without the risk of hitting muscle, which can cause unpredictable insulin absorption. At the same time, it’s short enough to avoid unnecessary pain and bruising. This length feels safe and reliable, giving me confidence that my medication is being delivered exactly where it needs to be.

Overall, 31G 5mm pen needles have made my diabetes management smoother and less painful. They allow me to stick to my treatment plan with minimal discomfort, which is crucial for maintaining good blood sugar control and my overall quality of life.

My Buying Guides on 31G 5Mm Pen Needles

When I first started looking for 31G 5mm pen needles, I realized there were quite a few factors to consider to make sure I was getting the right product for my needs. Here’s what I learned through my experience, and I hope it helps you too.

Understanding the Size: What Does 31G 5mm Mean?

The “31G” refers to the gauge of the needle, which means it’s very thin – the higher the gauge number, the thinner the needle. The “5mm” indicates the length of the needle. For me, choosing a 31G 5mm needle meant less pain and more comfort during injections because thinner and shorter needles are generally less intimidating and cause less tissue damage.

Compatibility With My Insulin Pen

Before buying, I made sure the pen needles were compatible with my specific insulin pen. Not all needles fit every pen, so checking the packaging or product description for compatibility was crucial. This step saved me a lot of hassle and ensured a secure fit during injections.

Sterility and Safety Features

I always look for pen needles that come individually packaged and sterile. This reduces the risk of infection. Some brands also offer safety features like a protective cap or a shield that retracts after use, which can be helpful if you’re worried about accidental needle sticks.

Needle Sharpness and Comfort

Sharpness is a big deal for me because it affects how painless the injection is. Many 31G 5mm needles are ultra-thin and designed for minimal discomfort. Reading reviews helped me find brands known for smooth and less painful injections.

Quantity and Price Considerations

I typically buy in bulk because it’s more cost-effective and convenient. However, I balance price with quality – cheaper isn’t always better if it means compromising comfort or sterility. Look out for packs that offer a good number of needles at a reasonable price.

Disposal and Environmental Impact

I’m mindful of how I dispose of used needles. Some brands include disposal containers or provide guidance on safe disposal. Also, I try to pick needles from companies that consider eco-friendly packaging or recycling programs.

Personal Comfort and Trial

Finally, if you’re new to 31G 5mm needles, consider buying a small pack first to see how comfortable you feel. Everyone’s experience is a bit different, and what works for me might not be perfect for you.

I hope my buying guide helps you make an informed choice when selecting 31G 5mm pen needles. Remember, the right needle can make a big difference in your injection routine!

Author Profile

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Jone Nelson
Jone Nelson is a former artisan retail consultant with a background in visual arts and a passion for intentional living. Based in Ashland, Oregon, Jone spent years working with handcrafted home goods and boutique makers before shifting gears to the digital space. Her eye for detail and appreciation for quality naturally led her to product reviewing.

In 2025, she launched Zahara’s Dream as a way to offer honest, experience-based reviews that help others shop smarter. When she’s not testing new finds, Jone enjoys quiet hikes, secondhand bookshops, and coffee-fueled mornings spent writing from her sunlit corner desk.