Cali does contain some alkaloids which are considered to be opiate
alkaloids. HOWEVER, these alkaloids are only used to convert to other alkaloids in the medical industry (takes an expensive lab) or as a homeopathy relaxant.
: Converted into other alkaloids in the medical industry.
Papaverine: considered to be a very mild relaxant, does have other medical values. (specific).
Thebaine has oripavine as a metabolite, which can be dangerous SWIM
Look up those 2 alkaloids in wiki, it will tell SWIY all that SWIY needs to know. Probably look up opium
poppy and california poppy
also to compare.
But the short answer is, no SWIY will not get high, sick perhaps, but not high.
Hope this has been of help