Do you lose your driver's license if you end up in the hospital after an overdose?
A friend of mine was in the hospital yesterday because of an overdose (don't know the substance)
And she had to spend the night there, she wasn't driving, her friends just took her to the hospital because of an overdose.
Do you lose your driving license if you are hospitalized with an alcohol or drug overdose?
If the police were not in the game or were informed (cf. Schweigeplficht), it cannot be expected.
Yeah, you can assume. It can happen if you find something with someone.
Alcohol is probably not, but in other drugs the bat is gone, usually followed by official long-term control on drugs and a MPU.