From the nervous system: headache, dizziness, drowsiness, paresthesia / hypoesthesia. very rarely - cramps.
From the side of the psyche: agitation including aggressive behavior or hostility, anxiety, depression, disorientation, tremors, impaired attention, unusual vivid dreams, hallucinations, impaired memory, psychomotor activity (including irritability, anxiety), fatigue, somnambulism, suicidal ideation and suicidal behavior (suicidality ), insomnia.
From the digestive system: nausea, vomiting, diarrhea, abdominal pain, indigestion, pancreatitis, dry mouth.
From the musculoskeletal system: arthralgia, myalgia, including muscle cramps.
From the skin and subcutaneous tissues: tendency to form hematomas, erythema nodosum, erythema multiforme, itching, rashes, hives, angioedema.
From the cardiovascular system: cardiopalmus.
On the part of the respiratory system, the organon of the thorax and the mediastinum: nosebleeds, pulmonary eosinophilia.
Disorders from the liver and bile ducts: increased activity of alanine aminotransferase (ALT) and aspartate aminotransferase (ACT), hepatitis (including cholestatic, hepatocellular and mixed liver damage).
Disorders from the kidneys and urinary tract: enuresis in children.
From the side of the blood and lymphatic system: increased tendency to bleeding, thrombocytopenia.
From the immune system: hypersensitivity reactions, including anaphylaxis, eosinophilic liver infiltration.
Infectious and parasitic diseases: infections of the upper respiratory tract.
Other: edema, asthenia (weakness) / fatigue, pyrexia, thirst.
Generally montelukast well tolerated.Side effects are usually mild and. as a rule, do not require the cancellation of treatment.
If any of the side effects listed in the manual are aggravated, or if you notice any other side effects not listed in the instructions, tell your doctor.