Essential non-prescription liquid or gel-based medications include items such as contact-lens/eye solution, cough syrup/spray, gel capsules or liquid-filled capsules (e.g. ibuprofen). You are allowed to carry these items in volumes greater than 100 ml (3.4 oz.) in your carry-on baggage. These liquids and gels must be declared to the Screening Officer separately.
To facilitate screening, CATSA recommends that the medication be properly labelled (professionally printed label identifying the medication or a manufacturer’s name or pharmaceutical label). See https://www.catsa.gc.ca/medication-and-medical-items for more information.
Documentation to support your medical needs or condition is not required; however, if you feel that it would help ease your screening, it should be presented to the screening officer along with your medically necessary items.