# Peptide Pens: Reusable Injection Pens | RefillPen

URL: https://www.refillpen.com/

Last updated: 2026-10-20T00:40:59.187Z

> Reusable peptide pens (V1, V2, V2.5 & V3) in 50 colors, $1 sterilized 3 mL cartridges, and a free peptide dosing calculator. Free shipping over $59.

## What is a peptide pen?

It's a new generation of reusable injection pens with a sleek, intuitive design that simplifies peptide prep: hassle-free setup directly from your vial, a seamless injection experience, and 50 color combinations across the V1, V2, V2.5, and V3 models. Every pen comes with a 3 mL cartridge, and **every order includes the starter tools**, so you can start the same day it arrives.

## Choose your pen

## Why RefillPen

## What the peptide community says

## More than pens — the whole system

## Not sure how many clicks?

The free peptide dosing calculator turns your mg, BAC water, and target dose into the exact units to dial.

## Questions?

The calculator page covers the common dosing questions. For anything about pens, cartridges, or compatibility, get in touch.

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