A formulation comprising platelet rich plasma (PRP) for treatment of patients who have experienced brain injury, consisting of a mixture of human autologous plasma, D5W, glutathione, methylcobalamin, and regular insulin. The formulation is infused directly adjacent to a patient's brain through the nostrils or nares of the nasal cavity. Treatment using the formulation may be supplemented with one or more therapies including hyperbaric oxidation therapy (HBOT), cranial osteopathic therapy, intravenous (IV) nutrition, electroencephalographic (EEG) biofeedback, low level laser therapy (LLLT), transcranial magnetic stimulation (TMS), adult stem cell treatments, and a ketogenic diet and medium-chain triglyceride (MCT) oil therapy.