It would make your levels go up and down and would make it harder to control your symptoms. I've had a few times that I've taken one dose one day and another the other but that was because lithium and I have a strange relationship and it prevented toxicities.

A lot of drugs have a pretty short half life, often only hours, so that would also be a factor. I was just looking at this for the Seroquel that I was trying to see how long until it is out of my blood. Pretty much it is gone every day around 14 hours after you take it. And that was the extended release version.