Description
The Rejuv Dual Chamber Cartridge Pen
The Rejuv Pen is a precision-engineered dual chamber cartridge injection device designed for accurate, hassle-free peptide administration. Unlike prefilled pens that come pre-mixed and begin degrading immediately, our dual chamber design keeps the lyophilized peptide powder and sterile diluent separated until the moment you activate it.
Twist the pen to break the internal seal, gently roll to mix, and you have a freshly reconstituted compound at full potency. The entire process takes less than 30 seconds.
Key Features
- Dual chamber technology – Peptide and diluent stay separated until activation, preserving maximum potency
- Click-dial dosing – Precise, repeatable dosing in fine increments for accurate administration
- Visual confirmation – Watch the powder dissolve into solution to verify proper reconstitution
- Extended shelf life – Lyophilized peptides remain stable for 12-24 months vs. 2-4 weeks when pre-mixed
- Reduced cold chain risk – Dry powder is far more tolerant of temperature variation during shipping
Compatible Compounds
| Category | Compounds |
|---|---|
| Fat Loss | GLP3RT (5mg, 10mg, 20mg), AOD 9604 |
| Muscle & Growth | CJC-1295, HGH 191AA, Ipamorelin, IGF-1 LR3, Tesamorelin, HCG |
| Recovery | BPC-157, TB-500, KPV |
| Anti-Aging & Skin | GHK-Cu, Glow, Klow |
| Cognitive | Semax, Selank |
| Energy & Endurance | MOTS-C, SLUPP332, VIP |
Each pen comes loaded with a single compound in its lyophilized form, paired with the appropriate volume of bacteriostatic water in the second chamber. Simply select your compound, activate when ready, and dose with precision.
Read our full breakdown of dual chamber vs. prefilled pens to understand why this delivery method preserves potency better than any alternative on the market.




