Absinthe you get in Canada does not have the hallucinogenic chemicals.
True absinthe is distilled directly from wormwood, and is relatively expensive because yield is not that high. Other distilled "absinthes" may contain some wormwood-distilled products, but may also contain pure grain alcohol.
Much like many vodkas sold in the US are grain alcohol based (and not pure potato vodkas). Look for "Potato Vodka" when you buy. It tastes totally different from Smirnoff, Popov, Skyy, etc.
Drink CHOPIN!!!