system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: I've always heard that multivitamins aren't very beneficial because your body can't absorb all the vitamins at once and the excess is excreted. Could your body absorb more of the vitamins if you cut the multivitamin into pieces and ate it throughout the day, instead of all at once?

Holy crap, my Inbox. Thank you everyone for all your responses. There are a lot of good explanations here. Looking through all these replies, it looks like the answer to my question is a resounding "maybe."
gpt
Vitamins aren't like magic substances that boost your body's stats. Most are enzyme co-factors, which means that they are required for the enzyme to work.

It's sort of like keys to a car: if you have a shortage, that is a real problem since the car won't work.  Having 500 car keys doesn't make the car work any better than having 1 car key though.