If you go under anesthesia, the doctor needs to know. If
you go to the ER and need pain meds? They need to know. Some medications
can even
kill you. Same for fast.
But again, not everything that’s prescribed is correct because you don’t know how the liver responds.
Tell the doctor, or find a lab that can find out if he’s a poor, normal or fast metabolizer.
You can also test yourself. It’s genetic!
And there won’t be anymore problems.