Having a tummy tuck in 2 wks. i have been on and off perc and kratom for back issues x 8 yrs. recent stopped (4 months) all pain mgmt tx. i wont take anything a few days before, but how dangerous is kratom if some still in my system on surgery day?

You'll need to discuss all medications, supplements, and extracts that you are taking with your physician and anesthesiologist. Kratom is banned in some states and countries due to serious safety concerns. The US FDA has warned consumers to avoid using products containing kratom. ref: https://www.webmd.com/vitamins/ai/ingredientmono-1513/kratom