Also, does buffered niacin (or non-flushing niacin) work equally as well as regular niacin in helping to lower cholesterol & take w/ coumadin (warfarin)?

Non-flushing niacin: Most of studies have been done with regular Niacin which works well for lowering cholesterol. Due to flushing, regular Niacin has to be started at a very low dose and then grandually increased to avoid uncomfortable flushing. Studies suggest that Niacin is much better than non-flushing niacin. Check with your doctor concerning this and concerning affect with coumadin (warfarin).

Yes: I don't seem to see any difference with my patients.