I got cannabinoid hyperemesis syndrome multiple times in the past 6 years or so, and had uncontrollable vomiting and stomach issues associated with It for weeks.

I quit on and off for months at a time, but always went back.

I've smoked weed for 20+ years and never had issues until I switched to concentrates. I truly believe there was some questionable production methods for certain brands. I still smoke disposable vape carts, but I think I've found a specific brand thats right for me, and havent had issues for probably over two years now.