How much chemistry knowledge is required to prescribe medication to patients?

Greetings and thank you for expressing interest in my post. I'm not particularly a chemistry fanatic and I'm curious what kind of chemistry I would be using on a daily basis when prescribing medication. Would it be basic chemistry like converting units and whatnot? I have yet to take organic chemistry so I would prefer to be informed before committing to a career which requires skills that are not my forte (nor my passion). In addition to my question, any descriptions of the day in the... How much chemistry knowledge is required to prescribe medication to patients?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums