Strychnine toxic side effects include dizziness, nausea, vomiting, abdominal pain, cramping sensation in chewing and neck muscles, difficulty in swallowing, rapid breathing, and in severe cases death due to respiratory paralysis, asphyxiation or heart failure. Strychnine is the dried mature seeds of Strychnine, family Strychnidae, with bitter flavor, warm nature, belonging to liver and spleen meridians, with great toxicity. It has the efficacy of dispersing knots and subduing swellings, clearing collaterals and relieving pain (dredging the meridians and relieving pain), and is used as the main treatment for bruises and injuries, fracture swelling and pain, carbuncle and gangrene (a kind of poisonous sores, which is an acute suppurative disease occurring on the surface of the body, limbs, and internal organs), rheumatism and obstinacy, numbness and paralysis and other illnesses. Strychnine has a big poison, overdose easy poisoning, clinical manifestations: dizziness, chest tightness, nausea, vomiting, abdominal pain, restlessness, respiratory enhancement, chewing muscles and neck muscle cramps, swallowing difficulties, breathing faster, the whole body tightening, and then extensor and flexor muscles at the same time for extreme contraction, severe poisoning can be due to respiratory paralysis, asphyxiation, or cardiac failure and death. Strychnine should not be used raw or taken for a long time. The poisonous components of this product can be absorbed by the skin, so it should not be used externally and applied to large areas. Pregnant women are forbidden to use it, and those who are weak in qi and blood should not use it. If you need to use the drug, it is recommended to use under the guidance of a traditional Chinese medicine doctor, do not self-medication, to avoid bringing discomfort to the body.