From the cardiovascular system: symptoms of vasodilation, hypertension.
From the digestive system: dyspepsia, flatulence, nausea, vomiting, abdominal pain, constipation, diarrhea, dry mouth or throat, anorexia, gingivitis, dental disease, increased appetite, increased activity of "liver" transaminases.
From the musculoskeletal system: myalgia, arthralgia, back pain, increased brittleness of bones.
From the nervous system: drowsiness, dizziness, ataxia, amnesia, confusion, impaired coordination, increased fatigue, impaired thinking, tremor, hypoesthesia, depression, dysarthria, insomnia,nervousness, nystagmus, strengthening, weakening or lack of reflexes, asthenia, anxiety, hostility, hyperkinesia, emotional lability.
From the respiratory system: pharyngitis, rhinitis, dyspnea, cough, pneumonia, bronchitis, respiratory infections.
From the genitourinary system: urinary tract infection, impotence.
From the sense organs: impaired vision, amblyopia, diplopia.
From the hematopoiesis: leukopenia, purpura (most often it is described as bruising that occurs with physical trauma).
Allergic reactions: skin rash, itching, acne.
Other: fever, viral infection, weight gain, pain of various locations, peripheral edema, edema of the face, headache.
Post-registration application experience
Cases of sudden unexplained death have been reported, whose association with treatment with gabapentin has not been established. Other adverse events: acute renal failure, allergic reactions, including hives, alopecia, angioedema, generalized edema; fluctuations in the concentration of glucose in the blood in patients with diabetes mellitus, chest pain, an increase in the volume of the mammary glands, gynecomastia,increased liver function, multiforme exudative erythema (including Stevens-Johnson syndrome), hallucinations, motor disorders such as choreoathetosis, dyskinesia and dystonia, palpitations, pancreatitis, tinnitus, thrombocytopenia, urinary incontinence, myoclonus.