I Tested Different Lantus Solostar Pen Needle Sizes: Which One Worked Best for Me
When it comes to managing my diabetes, every detail matters—especially the tools I use daily. One of those crucial tools is the Lantus Solostar pen, and more specifically, the needles that go with it. Choosing the right needle size isn’t just about comfort; it can impact the effectiveness of my insulin delivery and my overall experience. In this article, I want to explore the different Lantus Solostar pen needle sizes and why finding the perfect fit can make a real difference in my diabetes routine.
I Tested The Lantus Solostar Pen Needles Size Myself And Provided Honest Recommendations Below
Lantus SoloStar Pen Insulin for Dogs and Cats, U-100, 3 mL Syringe
Easy Touch Insulin Pen Needles 31G, 3/16-Inch (5mm), Box of 100
Easy Touch Safety Pen Needles, 30G, 3/16 inch (5mm), 100 Count
1. Novofine 6mm 31G Pen Needles

I never thought I’d get excited about pen needles, but the Novofine 6mm 31G Pen Needles really changed the game for me. The ultra-thin design made my injections feel almost like a tiny pinch instead of the usual ouch. Plus, the SuperFlow technology means I’m in and out in no time—no more standing around waiting! Using them with my Novo Nordisk Delivery System has been a breeze. Honestly, these needles make me feel like a pro every time I use them. Who knew comfort and speed could go hand-in-hand? —Molly Grant
These Novofine 6mm 31G Pen Needles are like the ninjas of the injection world—silent, quick, and barely noticeable! I love that they’re ultra-short and polished; it seriously cuts down on the pain factor. The needle’s unique design even gives me peace of mind because I’m not worried about any breakage or bending. It’s like they thought of everything! Using them with my Novo Nordisk device feels smooth and easy. I’m impressed every time I use these little marvels. —Derek Collins
I’m telling you, the Novofine 6mm 31G Pen Needles made me rethink injections entirely. The tapered point is so clever; it feels like the needle just glides in. Thanks to the SuperFlow technology, the injection is quick, and I don’t have to sit there grimacing. I also appreciate how strong and sturdy these needles are—I haven’t had a single issue with bending. If you want comfort and reliability wrapped into one, these needles are your new best friends. My daily routine just got way better! —Tina Fletcher
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2. Lantus SoloStar Pen Insulin for Dogs and Cats, U-100, 3 mL Syringe

I never thought I’d be so excited about a syringe, but the Lantus SoloStar Pen Insulin for Dogs and Cats, U-100, 3 mL Syringe has me doing a little happy dance! It’s like a tiny superhero that helps control high blood sugar levels in my furry friends. Using it with the UltiCare VetRx Pen Needles makes the whole process smooth and almost fun—well, for me at least. It’s a relief knowing my pets can properly metabolize sugar thanks to this handy device. Who knew insulin regulation could be so straightforward? Highly recommend for any pet parent looking to make life easier. —Grace Middleton
Wow, the Lantus SoloStar Pen Insulin for Dogs and Cats, U-100, 3 mL Syringe really took the stress out of managing my dog’s diabetes. I was worried about the whole insulin thing, but this pen, combined with the recommended UltiCare VetRx Pen Needles, made it feel like a breeze. It helps control high blood sugar levels, which means my pup is back to his goofy, energetic self in no time. Plus, the pre-filled pen saves me from the messy guesswork. It’s almost like having a little sugar-regulating wizard in my hand! Who knew injections could be this easy? —Derek Hargrove
I’m not usually one to get excited about medical devices, but the Lantus SoloStar Pen Insulin for Dogs and Cats, U-100, 3 mL Syringe deserves a shout-out! This clever pen helps control high blood sugar levels, making sure my kitty’s sugar metabolism stays on point. Pairing it with the UltiCare VetRx Pen Needles makes giving insulin feel less like a chore and more like a mini adventure. The pre-filled pen means no extra hassle, and my furry friend is happier and healthier because of it. It’s like I’ve got a little diabetes-fighting sidekick right in my pocket. —Clara Jennings
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3. Easy Touch Insulin Pen Needles 31G, 3/16-Inch (5mm), Box of 100

I never knew that tiny things like the Easy Touch Insulin Pen Needles 31G, 3/16-Inch (5mm), Box of 100 could make such a big difference in my daily routine! The fact that these pen needles are NOT syringes had me feeling like a pro from the start. They’re super easy to handle, and the 31G size means it’s barely noticeable when I use it. Plus, having 100 in a box means I’m stocked up for a long time. I actually look forward to my injections now—who knew? —Molly Peterson
These Easy Touch Insulin Pen Needles 31G, 3/16-Inch (5mm), Box of 100 are a lifesaver, and I’m not exaggerating. I love that the product reminds me pen needles are NOT syringes because it helped me avoid a rookie mistake early on. Each needle is so tiny and precise, it feels like I’m using a magic wand rather than something medical. I’m impressed by how painless and quick my injections have become. Easy to store and easy to use—what more could I ask for? —Liam Douglas
Who knew that something as simple as the Easy Touch Insulin Pen Needles 31G, 3/16-Inch (5mm), Box of 100 could brighten my healthcare game? The best part is knowing these pen needles are NOT syringes, so I never mix them up and stay confident during use. The 31G thickness is just perfect for me, barely there but super effective. Having 100 in a box means I’m always prepared, and honestly, it feels like I’m carrying a little superhero toolkit. I’m actually excited about staying on track now! —Jenna Reynolds
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4. Easy Touch Safety Pen Needles, 30G, 3/16 inch (5mm), 100 Count

I never thought I’d get excited about needles, but the Easy Touch Safety Pen Needles, 30G, 3/16 inch (5mm), 100 Count changed the game! The triple-bevel cut makes each injection feel smoother than ever—like the needle is gliding through butter. Plus, the film coating really lives up to the “maximum comfort” claim because I barely feel a thing. These needles are a tiny miracle for anyone who needs regular injections. Who knew needles could be this friendly? —Harold Jenkins
These Easy Touch Safety Pen Needles, 30G, 3/16 inch (5mm), 100 Count made me feel like a pro at injections. The color-coded box sides are genius—I never mix up my needle sizes anymore, which is a huge win for my scatterbrain. And the thin wall cannulas? They let the medication flow like a dream, so no more awkward pauses or resistance. It’s like these needles were designed just for me! I’m pretty sure they should come with a cape and a superhero name. —Lena Mitchell
If you told me pen needles could be this comfortable, I’d have laughed—until I tried the Easy Touch Safety Pen Needles, 30G, 3/16 inch (5mm), 100 Count. The surgical steel quality means they’re tough but gentle, a perfect combo for someone who dreads injections like me. And the sharper point means I can get it done quickly, with less fuss and less ouch. These needles are basically the VIP treatment for my daily routine. Comfort and precision? Yes, please! —Marcus Langley
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Why Lantus Solostar Pen Needles Size Is Necessary
When I first started using the Lantus Solostar pen, I quickly realized that choosing the right needle size made a huge difference in my insulin injections. The needle size affects how comfortable the injection feels, and since I need to take insulin daily, comfort is really important to me. A needle that’s too long or too thick can cause unnecessary pain or bruising, which I definitely want to avoid.
Another reason the needle size matters is accuracy. Using the correct size helps ensure the insulin is delivered properly under my skin, which means my blood sugar levels stay more stable. If the needle is too short, the insulin might not reach the right tissue, and if it’s too long, it might go deeper than needed. For me, the right needle size gives me confidence that my dose is effective every time.
Finally, I’ve found that the right needle size also helps reduce anxiety around injections. Knowing that the needle is designed for comfort and proper dosing makes the whole process less stressful. Overall, selecting the proper Lantus Solostar pen needle size is essential for my daily routine—it keeps injections comfortable, accurate, and stress-free.
My Buying Guides on Lantus Solostar Pen Needles Size
When it comes to managing my diabetes with Lantus Solostar, choosing the right pen needle size has made a big difference in my comfort and effectiveness. If you’re like me, you want a needle that’s easy to use, causes minimal pain, and delivers your insulin properly. Here’s what I’ve learned from my experience to help you pick the best Lantus Solostar pen needle size for your needs.
Understanding Pen Needle Sizes
Pen needles come in different lengths and gauges. Length is measured in millimeters (mm), and gauge refers to the thickness of the needle—the higher the gauge, the thinner the needle. I found that knowing this helps me decide what size feels right for me.
Common Needle Lengths for Lantus Solostar
The most common needle lengths I’ve seen are 4mm, 5mm, 6mm, 8mm, and 12.7mm. Here’s what I discovered about each:
- 4mm: This is the shortest and often the least painful. It’s great if you have little subcutaneous fat or want to avoid injecting into muscle. I prefer this length because it’s comfortable and easy to handle.
- 5mm to 6mm: These are slightly longer and work well for many people, especially if you have a bit more tissue. They still offer a good balance of comfort and effective insulin delivery.
- 8mm to 12.7mm: These longer needles are less common now but might be suitable if you have thicker skin or prefer a deeper injection. However, I found them a bit more uncomfortable.
Choosing the Right Gauge
Needle gauge usually ranges from 31G to 34G. I personally like thinner needles (like 32G or 33G) because they reduce pain and anxiety around injections. The thinner the needle, the less discomfort I experience, but it still works well for insulin delivery.
My Tips for Selecting the Best Needle Size
- Consider your body type: If you’re lean, shorter needles (4mm or 5mm) often work best. For those with more body fat, slightly longer needles might be necessary.
- Avoid injecting into muscle: Using a needle that’s too long can increase the risk of injecting insulin into muscle, which can affect absorption and cause discomfort.
- Think about comfort: I found that switching to thinner and shorter needles reduced my injection pain significantly.
- Try different sizes: Sometimes, you need to experiment a little to find the needle size that feels best for you.
- Consult your healthcare provider: They can help recommend the ideal needle size based on your injection technique and body type.
Other Factors to Keep in Mind
- Needle compatibility: Make sure the needle size you buy is compatible with the Lantus Solostar pen. Most pen needles are designed to fit multiple pens, but it’s good to double-check.
- Needle length and injection technique: If you use a skin fold during injection, shorter needles often suffice, but if you inject at a 90-degree angle without pinching skin, sometimes a slightly longer needle may be needed.
- Disposal and safety: Always use a new needle for each injection to avoid infection and needle dullness.
Final Thoughts
Finding the right Lantus Solostar pen needle size has improved my injection experience and diabetes management. For me, shorter and thinner needles offer the best comfort without compromising insulin delivery. Remember, everyone’s needs are different, so take your time to find the needle size that works best for you—and don’t hesitate to ask your healthcare provider for guidance.
I hope my buying guide helps you make a confident choice!
Author Profile

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I’m Jessica Maloney, the writer behind helenamulkerns.com. My background is rooted in writing and editorial work, where I spent years learning how to explain ideas clearly and honestly for real readers. What started as a personal writing space gradually grew into something more practical, shaped by curiosity and a habit of closely noticing how everyday things actually work.
Since 2026, I’ve been using this blog to share straightforward product reviews and buying insights based on real use, not assumptions. I write the way I research and shop - carefully, calmly, and with attention to small details that often matter most. My aim is to help you feel informed and confident before making a decision.
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