Examples of drug and supplement combinations that can decrease the effectiveness of either are taking supplements that stimulate the immune system such as zinc, Astragalus and Echinacea with corticosteroids intended to suppress the immune system, as they are working in opposite directions. Also, remedies with a hyperglycemic (blood sugar raising) action such as celery seed, Bupleurum, rosemary and Gotu kola can counteract the hypoglycemic (blood sugar reducing) work of diabetic drugs. High doses of vitamins A, C and K can all decrease the anticoagulant activity of Warfarin.
In the past several decades, the number of people taking herbal, dietary and energy supplements has increased exponentially. Whereas, prior to the late 1980s, most patients were unlikely to be supplementing with anything other than multivitamins, now a doctor must expect the majority of the population to have read about their condition on the Internet and be using whatever complementary remedies they think might help, with or without expert guidance. Once seen as natural and harmless, it is now clear that herbal supplements, dietary supplements and energy supplements can interact with conventional medications just as conventional medications can interact with each other.
It is important to note that many complementary medicines are quite safe to take alongside most forms of pharmaceutical drugs, and a cup of nettle or chamomile tea together with your morning pill of whatever form is not going to have any deleterious effect. However, a…
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