The correct name of the drug is “Vasotropin Injection”. This product has the efficacy of clearing heat, nourishing yin, activating blood circulation and removing blood stasis (promoting blood circulation and eliminating blood stasis in the body), and can be used for thromboembolic vasculitis, cerebral thrombosis and sequelae. Pulsatilla Injection is a proprietary Chinese medicine, which is composed of Cow’s Knee and Dendrobium, etc. It has the efficacy of clearing away heat, nourishing Yin, activating blood circulation and removing blood stasis, and can be used in the treatment of thrombo-occlusive vasculitis, arteriosclerotic occlusive disease, cerebral thrombosis and its sequela, and venous thrombosis. Adverse reactions of pruritus, rash, headache, palpitation (rapid heartbeat, often accompanied by panic), rare dyspnea, anaphylaxis, etc. are occasionally seen with Pulsatilla Injection. This product is contraindicated in pregnant women, people with a history of allergy or hypersensitivity. Proprietary Chinese medicines need to be used under the guidance of a Chinese doctor to identify the symptoms, and individuals should not use them blindly to avoid adverse consequences.