Cerebrolysin is generally well tolerated. If injected too fast, it may cause a moderate heat feeling, dizziness and palpitation (in isolated instances) may result.
In extremely rare cases, hypersensitivity reaction manifested itself as chills or slight increase in body temperature, the cause of which is probably the hyper-responsiveness of patients. In rare cases, gastrointestinal disturbances (appetite loss, diarrhea, nausea, vomiting), local reactions (erubescence, pruritus and burning at the injection site) have been reported but none of these adverse reactions have lasted long. One grand mal attack has been associated with Cerebrolysin. In no case to date has the undesirable effect persisted or proved threatening to the patient. Cerebrolysin has also been associated with agitation, aggression and confusion in very rare cases.