First of all dear user - "Crab Bucket"
Remember this before taking advice from our online community.
In lord Buddha's last few moments a question was asked by a monk from lord Buddha.
"After you who should be our leader"
The answer was,
"My teachings are timeless,anyone with the will can learn and realize the truth by themselves.after my death my teachings will be your leader"
What i want to say is,
as lord Buddha himself said that the teachings are timeless.Be careful of the people who claim to have a modern view about things
(who might teach you a much different but a equally logical path,Because it will be logical for sure but it is not Buddhism!If you follow that you are no longer a follower of lord Buddha,you are a follower of that new teacher!)
And here is the answer-
The reason of not using Alcohol and things like that is the childish mindset it create.You are no longer in control of you actions and you are not aware of what you are doing.Also what you might do is a question to yourself!
Buddhism repeats only one thing in almost every teaching "Mindfulness".Loose this you are fragile to anything.Loose your ability to think you are no higher than an animal!
You might steal,lie,destroy and you might even take the life of a loved one.This kind of behavior does not help the path to nirvana.
But if you are taking some kind of medicine,supplement for something that cause similar behavior there is no need to panic.
You are not in a addiction+It is not bad for your health+You are not going paranoid like a drunk.
You are safe my friend and have no fear you are within boarders and doing nothing wrong.Just be careful about the dosage!