Herpes zoster can drink mung bean water. It is best not to put Chinese medicine. Astragalus membranaceus is because Astragalus membranaceus tonifies qi and strengthens yang. Herpes zoster is mostly caused by damp-heat of liver meridian and liver depression, which is characterized by redness, swelling, heat and pain and multi-dimensional fire. Astragalus has the effect of invigorating qi and helping yang, and it is easy to aggravate the condition. You can buy some antiviral drugs such as acyclovir tablets or famciclovir tablets in western medicine in pharmacies, and Chinese medicine can take some Longdan Xiegan pills to taste Xiaoyao powder.