Encephalin Injection (correctly known as Brain Protein Hydrolysate Injection) has the effect and function of protecting nerve cells and improving neuron and energy metabolism in the brain. Brain Protein Hydrolysate Injection is mainly made of 16 free amino acids and a small amount of low molecular peptides, which can promote protein synthesis in the brain, regulate and improve neuronal metabolism and energy metabolism in the brain. The drug is suitable for improving the sequelae of memory loss and concentration disorders caused by craniocerebral trauma and cerebrovascular disease, as well as assisting in improving cerebral insufficiency, treating protein deficiency, general protein digestion and absorption disorders and neurasthenia. The drug needs to be contraindicated in people who are allergic to the product, pregnant and lactating women, patients with epilepsy, severe renal dysfunction. Adverse drug reactions package rash, itching, skin flushing, chills, fever, dyspnea, dizziness, vertigo, diarrhea, abdominal pain, palpitations, etc. The specific use of the drug should be carried out under the guidance of a specialist.