Retatrutide Dual Cartridge Pen Kit

The Retatrutide Dual-Chamber Pen Kit supplies 40mg of triple-agonist research compound in an advanced dual cartridge format designed to keep the lyophilised peptide powder and bacteriostatic water completely separate until activation.

Unlike standard pre-filled liquid cartridges, the dual-chamber system stores the dry peptide powder and liquid component in separate chambers within the same cartridge. The cartridge is only mixed once placed into the compatible pen and activated, meaning the compound is not sitting pre-reconstituted in solution before it reaches you.

This matters because lyophilised peptide powder can remain stable for significantly longer when stored correctly, while once reconstituted with bacteriostatic water the usable research window is typically much shorter. With a traditional liquid cartridge, it can be difficult to know how long the compound has already been mixed before supply.

The PROTEUS dual-chamber format gives greater clarity and control. The compound remains separated until activation, helping preserve integrity before mixing and giving a clear starting point for the post-reconstitution research window.

The click-dial pen format is designed for consistent, repeatable measurement without manual syringe-based reconstitution. This creates a cleaner, more controlled and more convenient format for laboratory research handling.

Kit includes compatible pen, one 40mg dual cartridge (dual-chamber) Retatrutide cartridge, and bacteriostatic water contained within the cartridge system. Independently lab-tested at ≥99% purity by HPLC, with a third-party Certificate of Analysis available for every batch.

Store unopened cartridge as directed, away from direct light. Once activated and reconstituted, refrigerate at 2–8°C and use within the recommended research window.

This product is sold strictly for research purposes only. Not for human consumption, and not intended to diagnose, treat, cure or prevent any disease or condition.