V3 Peptide Pen Kit UK Buyer's Guide
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Quick answer: A V3 peptide pen kit is a reusable pen body built to your own spec, paired with 3mL cartridges and a case. V3 Pens UK sells each piece separately so you can build exactly the kit you need, or buy the Pen + Deluxe Case Bundle for £28 as a ready-made starting point.
What is a reusable peptide pen?
A reusable peptide pen is an empty pen body designed to be used again and again, rather than thrown away after a single use. The V3 peptide pen is built from anodised aluminium and is compatible with standard 3mL refill cartridges. It contains no needle, no medication, and no contents of any kind.

What's in a typical V3 peptide pen kit?
A complete V3 peptide pen kit usually includes a reusable pen body, a clip-on lid, and cartridges. At V3 Pens UK, each piece is sold as a separate empty accessory, so you can build your own kit exactly as needed:
- One reusable V3 peptide pen body, £20
- Clip-on lid for storage, included with the pen
- 3mL Refill Cartridges (10-pack), £10
- V3 Duo Case, £10
- V3 Deluxe Hard Case, £13
- Metal Vial Cap Opener, £3.50
Is there a ready-made kit option?
Yes. The V3 Pen and Deluxe Case Bundle pairs the pen body with the Deluxe Hard Case for £28, saving £5 compared to buying separately. It's the fastest way to get started if you don't need to pick every piece individually.
Are V3 peptide pens empty?
Yes. All V3 Pens UK products are empty peptide pens and accessories only. No needles, no medication, and no consumable substances are included with any pen, cartridge, or accessory.

V3 peptide pen specifications
- Body material: Anodised aluminium
- Cap type: Clip-on lid, closed cap design
- Cartridge compatibility: Standard 3mL refill cartridge, universal fit
- Control mechanism: Precision dial for fine adjustment
- Colours available: Champagne, Red, Black, Purple, Blue
- Reusable: Yes, pen body designed for repeated use
- Contents: Empty, no needle, no medication, no consumable substances included
Peptide pen V3 vs earlier models
The peptide pen V3 model is the latest version, featuring an upgraded clip-on lid not found on earlier V1 or V2 designs. If you're comparing peptide pen V3 against older models, the clip-on lid and refined construction are the key upgrades. See the full V1 vs V2 vs V3 comparison for the complete breakdown.
Where to buy a V3 peptide pen kit in the UK
You can build your own V3 peptide pen kit directly from V3 Pens UK, with the reusable pen, cartridges and accessories, and storage cases all dispatched from UK stock.
Kit FAQs
What's the cheapest way to get a full kit?
The Pen + Deluxe Case Bundle at £28 is the most cost-effective ready-made starting point, saving £5 versus buying the pen and case separately.
Do I need to buy cartridges separately?
Yes. Cartridges are sold separately as 10-packs at £10, so you can buy exactly the quantity you need.
Is the pen body compatible with V1 and V2 cartridges too?
Yes. The V3 pen uses the same standard 3mL cartridge format as V1 and V2 models.