Absorbing 99 facts

While investigating facts about Absorbing 99, I found out little known, but curios details like:

It only takes 45 minutes for 99% of the caffeine to be absorbed through these membranes. In humans the half-life for caffeine is anywhere from 2.5 to 4.5 hours, which explains why the average energy drink or coffee's effect lasts about 2 to 3 hours.

In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across. Here are 1 of the best facts about Absorbing 99 I managed to collect.