I was going to say something similar to this but not in such diplomatic language.*Sigh*
The benefits of some vitamins can't possibly be worth the risk of killing yourself.
Your Reddit friends are not doctors no matter how smart they think they are.
Not to be harsh but I don't want to see the moderators having to write your obituary.
I understand that we all feel desperate to feel better but grasping at dangerous straws is not the answer.
Its been nice knowing you OP, a piece of advice, if you don't have a Will your estate ends up in court and its an expensive and messy process. A legally written Will costs money in most if not all countries but its false economy to not write one and let the courts handle it later.
Also you should designate your Power of Attorney and resuscitation wishes.