Thanks for the question. I believe that keeping a doctor involved as much as possible is VERY important. That said, seeing a good doctor is more important than seeing a bad doctor

. I have not read any studies on the manifestation of such side effects with your particular drugs when combined with Sylimarine. I can tell you that milk thistle often times interacts with the metabolism of drugs in the liver (meaning that it can slow down the breaking down of drugs thus making drugs stay in your system longer, or more commonly it can break down the drugs you are taking faster). Having a doctor involved is important because then you have the freedom to monitor your drug levels and liver health.
On a side note, I have had a couple patients in my clinic experience similar feelings of nausea, shortness of breath, and fatigue. Usually this goes away. I have my patients cut back there dosage in half. Then slowly build back up again. The reasons is that when bile is released into the intestines in a strong way, all three of these symptoms can appear if the gall bladder has not been stimulated in a long time. Slowly increasing the stimulation to the Gall Bladder can lesson the side effects. Best of luck. -Mark