Adds a safety margin (10–20%) to your total vial count. Peptides can have minor dosing losses from syringe dead space. A buffer ensures you won't run short mid-protocol.

Yes — add up to 3 compounds. Each is calculated independently and generates a combined shopping list showing total vials needed for your full stack.

Larger vials often have a lower cost-per-mg. The comparison table shows how many of each size you'd need and estimated cost per dose — so you can make the most economical choice.