Vial or Pen? Understanding the Better Option for Weight Loss Peptides
When choosing between a vial and a pen for weight loss injections, it’s essential to understand a critical difference: what exactly you’re injecting into your body. While both methods deliver the active peptide (e.g., semaglutide, tirzepatide), the composition of the injection differs significantly. With a vial, you inject only the pure peptide mixed with sterile…