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My Prescription Vial Looks Underfilled — Is This Correct?

Updated March 1, 2026

My Prescription Vial Looks Underfilled — Is This Correct?

This is a very common concern and the answer is: yes, your vial is correctly filled.

Why Does the Vial Look Underfilled?

The number on the vial (for example, "2 mL") is the maximum capacity of the bottle — not the amount of medication dispensed inside.

A 2 mL vial containing 1 mL of medication is perfectly normal and accurately filled. There was no error in filling your prescription.

If you have specific questions about your dose, message your care team through the patient portal.

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