Two parts of your vial label
Your vial has two different sections:
Ingredients (what’s in each mL)
Signature Note (how much to inject and how often)
1. Ingredients = what’s in each 1 mL
Example: ketamine HCl 100 mg/mL + hydroxocobalamin 250 mcg/mL + pyridoxine 4 mg/mL
This is the formula for the liquid, not how much liquid is in the vial.
The vial volume (for example, 2.5 mL) is the total liquid in the vial.
2. Signature Note = how to use it
Example:
Inject 0.6 mL (60 mg) subcutaneously every 3–7 days x3.
Do not exceed 60 mg every 3–7 days.
Do not refill for 9 days.
Discard excess mLs not used.
This tells you:
Exactly how much to inject: 0.6 mL each dose
How often: every 3–7 days, for 3 injections
What to do with leftover: discard any extra in the vial
Your dose is based on the mL in the Signature Note, not the “100” in “100 mg/mL.”