Hi. My Dad Has Dementia And Is Also Anemic. Recently

Hi. My dad has dementia and is also anemic. Recently he has been having sharp back pains (we think) but can't explain to us what is happening or where.
He gets Procrit 60,000 and Neupogin 150cc every week for his blood count.
We were going to look into medical marijuana for him but wanted to see if that interfered with the shots he takes weekly.
Is this something you can help with?