How do I know how many units to draw up?

How do I know how many units to draw up?

Also asked: units, dosage calculator, how much to inject, mg to units, syringe markings, how many clicks Answer: Units depend on your prescribed dose in milligrams and the concentration of your vial, so the same 2.5 mg can be a different number of units on two different vials. Use the Zappy Health Dosage Calculator with the numbers printed on your label.

Never estimate, and never reuse a unit number from a previous vial or a friend's vial. If the label and the calculator disagree with what you expected, stop and message us.

Escalate: any confusion about units. This is a dosing-error risk and always gets a human.