Agreed. If you take any medications you should consult your doctor prior to taking herbal supplements—ginger, turmeric, green tea, echinacea, THC/CBD, etc. All drugs, supplements, etc. are metabolized by enzymes in the liver. More than 50% are metabolized by CYP3A4. Anything metabolized by this enzyme can interfere with your medications. I am on anti rejection meds, including Tacrolimus...there are more than 700 drug and food interactions with it. Drugs.com is a good app I check when I don’t know about an ingredient I find. I eat very well and shop at a food coop. But I have found that natural foods often contain herbs or flavonoids I cannot take, so I am also careful to read labels.