Description
Reusable Peptide Pen Injector V5 — Latest Version, In stock
The V5 is the latest pen in the Optimised Lifestyle reusable 3ml cartridge pen range, available in four colours: Gunmetal (Black), Teal, Gold and Red. It follows the popular Reusable Peptide Pen Injector (V3), which remains available in the full range of colours, and it keeps the same clear glass cartridge end.
Available to In stock. Our first V5 stock is on its way to us and is expected within around ten days. Orders are dispatched as soon as it arrives and has been checked, and are taken in the order they are placed. If you need a pen straight away, the V3 is in stock for immediate UK dispatch.
What’s different from the V3
- 80 IU dosing scale — the V5 is marked to 80 IU, where the V3 is marked to 60 IU, giving a wider range on a single setting.
- Retracting needle — the needle retracts into the pen, so it is hidden while the pen is in use.
- Same cartridge end — the V5 has the same clear glass cartridge end as the V3, with the same protective cap that slides over it.
How the V5 works

Specifications
| Dosing scale | 80 IU (V3: 60 IU) |
| Needle | Retracting, hidden during use |
| Cartridge end | Clear glass cartridge end with protective cap, same as the V3 |
| Colours | Gunmetal (Black), Teal, Gold, Red |
| Dispatched from | United Kingdom by Optimised Lifestyle |
| Use | Laboratory research use only |
Frequently asked questions
What is the difference between the V5 and V3 pen?
The V5 has an 80 IU dosing scale, where the V3 is marked to 60 IU, and a retracting needle that is hidden while the pen is in use. The clear glass cartridge end is the same on both pens.
Does the V5 use the same cartridges as the V3?
Yes. The V5 has the same clear glass cartridge end as the V3, so it takes the same 3ml glass cartridges.
Is the needle visible when the V5 is in use?
No. The needle retracts into the pen, so it is hidden while the pen is in use.
When will the V5 be dispatched?
The V5 is available to In stock. Our first stock is expected within around ten days, and orders are dispatched in the order they were placed once it has arrived and been checked.
Which colours does the V5 come in?
Gunmetal (Black), Teal, Gold and Red. Colour is a preference, not a guarantee, so depending on stock you may receive an alternative colour.
Is the V5 for human use?
No. The V5 is supplied as laboratory research equipment for use in controlled research environments by qualified personnel.
Pairs with the V5
- Peptide Pen Kit V5 — the V5 pen with a 3ml cartridge, 10 pen needles and a carry case
- Reusable Peptide Pen Injector V3 — in stock for immediate dispatch
- 3ml Glass Cartridges (Pack of 5)
- Pen Needles 31G × 6mm (Pack of 10)
- Peptide Pen Case
- How to use your peptide pen (video guide)
For laboratory research use only. Not for personal or clinical use. Colour is a preference, not a guarantee.
The V5 peptide pen is the newest generation of reusable peptide pens in the UK: an 80-unit dial, a retracting needle, and full compatibility with the same 3ml cartridges and needles as the V3.















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