Non-steroidal anti-infammatory drugs (NSAID’s) such as Advil and Votaren are associated with kidney disease and should be stopped. Your kidney function may improve off of these NSAID’s and your physician likely wants to remeasure your kidney function off of all of these medications to learn if this is the problem. I have no information about the herbal medications that you mention. I am not sure what they could be doing to your kidney function and would recommend that you suspend use of these medications until all of your testing is complete. Most herbal agents have never been tested in patients with chronic kidney disease (CKD) and hence your physician is trying to make sure your kidney function returns to normal. If it does not, then further testing may be needed.