Glutathione and B1 which are two drugs also have different side effects. Glutathione is a drug commonly used to treat peripheral neuritis and regulate the function of plant nerves, and its side effects are manifested in the following two aspects. The first is the side effects of the gastrointestinal tract, after taking the occasional stomach discomfort, stomach distension, serious symptoms of nausea and vomiting may occur. Generally these symptoms can disappear after discontinuing the drug. Second, glutathione can cause some allergic reactions, the most important manifestation is a rash. In this case, you can stop using the drug and go to the dermatology department for an examination. The side effects of vitamin B1 are basically none. This vitamin is contained in vegetables and food.