Visitors of all ages arriving in Canada by air require a passport or passport equivalent, such as a NEXUS card. If you need a passport right away, get a passport within 24 hrs with Rushmypassport.com.
OTC means Over the Counter, which is a test that you can buy at the store and do not need a prescription for. Many medication are called OTC which means you can just go by them without a doctor's prescription. Or it could also be an OTC stock trade.
In many countries, OTC drugs are selected by a regulatory agency to ensure that they are ingredients that are safe and effective when used without a physician 's care. OTC drugs are usually regulated by active pharmaceutical ingredients (APIs), not final products.