You want to be very very very careful there.
Drug interactions can be quite tricky and if you start adding things to the mix without prior notification or any notification and/or approval from the physician, then there's usually a higher chance of there being more damage done than any help or assistance given.
Let's say, the mixing of herbal natural whatever that's completely harmless and possibly even beneficial, when combined with prescribed medication which is beneficial with some side effects but over all beneficial combines to create a toxin which winds up killing your aunt?
Rare, sure, but, it can happen.
If you want to play doctor, keep the doctor in the loop.
edit on 9-3-2013 by Druscilla because: (no reason given)