Compound Tretinoin is not available as an oral pill. Compound Tretinoin is only available as an injection, which can be used to treat acute and chronic cerebrovascular diseases caused by stroke, Alzheimer’s disease, traumatic brain injury, spinal cord injury, such as central nervous system injury, peripheral nerve injury, cerebrovascular accidental trauma, post-traumatic neurological sequelae, and cerebral dysfunctional sequelae caused by cerebrovascular diseases. Compound Tretinoin Injection is a traditional Chinese medicine compound injection containing tretinoin and porcine brain extract. Its main ingredients are tretinoin, active polypeptide, various amino acids and gangliosides. It can also be used to treat occlusion syndrome, arteriosclerosis, thrombophlebitis, capillary hemorrhage and edema caused by increased vascular permeability. Compound Tretinoin Injection is a prescription drug, occasionally chills, mild fever, dizziness and other adverse reactions, individual can cause allergic rash. Adverse reactions are generally not serious, and symptoms may disappear on their own after slowing down the drip rate or stopping the drug as prescribed by the doctor. Allergic to the product, severe renal insufficiency, epilepsy or epileptic seizures should be prohibited. Cotrimoxazole injection should be used in accordance with medical advice, and should not be used on its own, so as not to cause adverse reactions or aggravate the condition.