Peptide Pens

Peptide Pens arrive pre-mixed in a multi-dose cartridge, so there is no reconstitution step, no bacteriostatic water and no separate accessory set. A cartridge holds 10 mg in 3 ml, with larger fills on some lines; nearly every compound we stock as a vial is also available as a pen, and Kisspeptin is offered as a pen only. Vials stay cheaper per milligram, while pens save the preparation step and give repeatable volumes.