If you take medications regularly, you may need to compensate for the depletion of critical nutrients. Here are some of the most common causes of deficiency. Tylenol: Glutathione Birth control: B vitamins, Did your doctor tell you this? Medications can deplete nutrients in MANY ways. Some drugs interfere with nutrient absorption by chelating minerals or competing for absorption in the gastrointestinal tract. For instance, What Is Reduced Glutathione? Benefits, Sources & Uses Your liver works every single hour of every single day, filtering toxins, metabolizing hormones, processing everything you eat and breathe. And to do all of it? It needs glutathione. Your liver uses