https://www.easyship.com/blog/shipping-restrictions-canada
Importing to Canada: Restricted Items
If an item is restricted, it means that certain documentation must be provided before Canadian customs can release your parcel to its final destination.This may include, but are not limited to, proof of a license or certificate, and any required forms.
The following goods are currently on the restricted list:
copyright works
currency
dead animals, including wild birds or their parts
diamonds (rough)
drugs and other controlled substances
eggs, milk and other dairy products
films
fish, game, meat, poultry, fruit, vegetables and their products
intoxicating liquors
liquids, liquefiable substances and powders
live chicks, parasites, leeches, bees and bees' wax
medical material, including specimens
plants, seeds, fruits, bark, plant parts and soil
seed potatoes, onions and other raw root crops
tobacco
wheat, straw, bran, chaff, barley and their products
You can visit the Canada Border Services Agency website for a complete and updated list of restricted items.
Note the following for these items:
Alcohol
Importing alcohol (including wine) is strictly prohibited unless it is being mailed to a Provincial Liquor Board or Commission, or to a manufacturer or distributor that is allowed to handle such beverages in Canada.
Cannabis
While cannabis is legal in Canada, it is strictly regulated. Importing cannabis in any form (including CBD oil) requires a permit or exemption from Health Canada, and these are issued under very limited circumstances and for limited purposes: medical, scientific, or industrial hemp. Cannabis imports will also be subjected to duty payments.
For more information, this Health Canada bulletin is useful, in addition to this official website on cannabis in Canada provided by the government.
Vaping Products
There are specific requirements to import vaping products into Canada, and they depend on the ingredients and/or purpose of the products. You can see this customs notice or visit Health Canada for more information.
Importing to Canada: Prohibited Items
If an item is prohibited, it means it is strictly not allowed to be imported into Canada. Prohibited items that arrive in customs may not be returned – Canadian customs has the right to seize and destroy the item.
The following goods are prohibited for import, and should never be shipped to Canada:
bee-keeping apparatus, used
chain letters and other literature pertaining to fraudulent schemes
contraceptive devices and literature
corrosives, nuclear substances or oxidizing substances
counterfeit or imitation coins
firearms, weapons and ammunition
gold bullion, gold dust or non-manufactured metals
hate propaganda
live animals
manufactured goods bearing insufficient markings or origin
margarine or butter substitutes
metallic labels
obscene, immoral, indecent or scurrilous matter
poisonous or infectious substances
prison-made goods
unlawful lottery tickets and advertising