Microdot Max 4mm 32G Pen Needles
Everything you need to know about Microdot Max 4mm 32G Pen Needles: comfort, compatibility, and why they’re the gold standard for pen injections
Five key takeaways
- Microdot Max 4mm 32G Pen Needles are ultra-thin, short needles designed for comfortable, effective subcutaneous injections [1], [2].
- They are compatible with most major pen injectors, including Mounjaro and Wegovy, making them a top choice for diabetes and weight management therapies [2].
- The 4mm length and 32G gauge reduce pain, bruising, and the risk of injecting into muscle, even for children and people with low body fat [3].
- Single-use design ensures sterility and sharpness for every injection—never reuse your pen needles [1].
- Microdot Max 4mm 32G Pen Needles are trusted by NHS professionals and recommended in national guidelines for insulin and GLP-1 therapy [1], [2].
Overview
Diabetes, obesity, and other chronic conditions often require regular injections. The right needle can make a huge difference in comfort and effectiveness [1].
Microdot Max 4mm 32G Pen Needles are designed to deliver medication just under the skin, where it’s absorbed best, without the pain or risk of hitting muscle [3].
These needles are recommended by healthcare professionals, and their universal fit means you can use them with almost any major brand of pen injector [2].
Active ingredient
There are no active ingredients in Microdot Max 4mm 32G Pen Needles. They are single-use, sterile medical devices designed for safe subcutaneous injections [2].
What is it for?
Microdot Max 4mm 32G Pen Needles are designed for subcutaneous injections of medications such as insulin, GLP-1 receptor agonists (like Mounjaro or Wegovy), and other injectable therapies [1].
Their short length and ultra-thin design make them suitable for adults, children, and elderly patients, reducing pain and the risk of complications [3].
How does it work?
Microdot Max 4mm 32G Pen Needles attach securely to compatible injector pens. The 4mm length ensures the medication is delivered just below the skin, where it’s absorbed most effectively [2].
The ultra-thin 32G needle glides in smoothly, minimising pain, bruising, and tissue trauma [3].
Because they’re single-use and sterile, every injection is as safe and sharp as the first, helping to prevent infection and skin irritation [1].
How to use it?
For instructions on how to inject Mounjaro, please read our blog, ‘How to inject Mounjaro’.
- Wash and dry your hands thoroughly before handling the needle.
- Remove the Microdot Max 4mm 32G Pen Needle from its packaging and attach it securely to your injector pen, following the pen’s instructions [2].
- Prime your pen as directed (release a small drop of medication to remove air bubbles).
- Pinch a fold of skin on your chosen injection site (abdomen, thigh, upper arm, or buttocks).
- Insert the needle at a 90-degree angle (or as directed by your healthcare provider) and deliver the dose [3].
- Wait a few seconds before removing the needle to ensure the full dose is delivered.
- Safely dispose of the used needle in a sharps container.
Never reuse a pen needle—this reduces pain, prevents infection, and keeps every injection safe [1].
Side effects
While Microdot Max 4mm 32G Pen Needles are designed to minimise discomfort, some users may experience:
- Mild pain or stinging at the injection site
- Small bruises or minor bleeding
- Occasional redness or irritation [1]
Severe side effects are rare. If you notice swelling, persistent pain, signs of infection, or allergic reaction, contact your healthcare provider immediately [2].
Drug interactions
Microdot Max 4mm 32G Pen Needles do not interact with any medications. However, always follow your healthcare provider’s advice about which medications and devices are safe to use together [1].
If you use multiple injectables or medical devices, consult your pharmacist or diabetes nurse for best practice and compatibility [3].
FAQ
What are Microdot Max 4mm 32G Pen Needles used for?
They’re used for subcutaneous injections of insulin, GLP-1 analogues (like Mounjaro or Wegovy), and other injectable medications.
Are Microdot Max 4mm 32G Pen Needles compatible with my pen?
They fit most major pen devices, including Novo Nordisk, Sanofi, Lilly, and more.
Can I reuse Microdot Max 4mm 32G Pen Needles?
No, these needles are single-use only. Reusing increases pain, risk of infection, and can damage skin.
Are these needles suitable for children?
Yes, the short 4mm length and 32G thickness make them ideal for children, adults, and elderly patients.
Do they hurt?
Most users find them very comfortable due to their ultra-thin design. Some mild pain or bruising may occur.
How do I dispose of used pen needles?
Always use a sharps bin and never throw used needles in household waste.
Can I use these needles for Mounjaro or Wegovy?
Yes, they are compatible and recommended for use with both Mounjaro and Wegovy pens.
Do they contain latex?
No, they are latex-free and safe for people with latex allergies.
What if I inject into muscle by mistake?
The 4mm length is designed to minimise this risk, but if it happens, consult your healthcare provider.
Where can I buy Microdot Max 4mm 32G Pen Needles?
You can order them online at courierpharmacy.co.uk for fast, discreet delivery and expert support.
References
[1] NHS. (2024) Diabetes. Available at: https://www.nhs.uk/conditions/diabetes/ (Accessed: 25 August 2025).
[2] BNF (2024) Pen Needles. Available at: https://bnf.nice.org.uk/medical-devices/pen-needles/ (Accessed: 25 August 2025).
[3] NICE CKS. (2024) Insulin therapy in type 2 diabetes: Injecting devices. Available at: https://cks.nice.org.uk/topics/insulin-therapy-in-type-2-diabetes/prescribing-information/insulin-injecting-devices/ (Accessed: 25 August 2025).
