You can claim eligible medical expenses paid in any 12-month period ending in 2022 and not claimed by you or anyone else in 2021.
As seen in this Canada Revenue Agency (CRA) link: Details of medical expenses
Prescription drugs and medications that can lawfully be obtained for use by the person only if prescribed by a medical practitioner. Also, the drugs or medications must be recorded by a pharmacist. You cannot claim over-the-counter medications, vitamins, or supplements, even if prescribed by a medical practitioner (except Vitamin B12).
For more information please see our TurboTax FAQ: How do I choose a claim period for medical expenses?
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