The main ingredients of snake tablets are hepatica, toadstool skin, centipede, etc. Originally, the main treatment for poisonous snakes and venomous insect bites, play a role in detoxification and swelling, also has a certain effect on shingles, can be taken internally as well as externally, but if it is the after-effects of herpes zoster, this is mainly the after-effects of neuralgia, which may require a long period of time to be treated. The ingredients inside the snake tablets, such as centipede and toadstool skin, are somewhat toxic, and it is recommended that they not be taken for more than a week, so this may not be appropriate for postherpetic neuralgia. It should be treated with targeted medications, such as gabapentin and pregabalin, which are more effective and safe. Snake tablets can usually be used to treat the acute phase damage of shingles and may be relatively less appropriate for postherpetic neuralgia. Herpes zoster is a common viral skin disease caused by varicella zoster virus infection, mainly causing localized unilateral clustered blisters, but also accompanied by significant nerve pain. In the acute phase of the use of antiviral, nutritive nerve and analgesic drugs treatment, the effect is still relatively good.