The drug is well tolerated at recommended doses.
In single cases there are:
from the side of the central nervous system: headache, fatigue;
from the digestive tract: nausea, pain in the epigastric region;
from the endocrine system: hypoglycemia (up to the development of coma);
from the hematopoiesis: Anemia, hemolytic anemia (especially for patients with deficiency of glucose-6-phosphate dehydrogenase); rarely - thrombocytopenia;
allergic reactions: skin rash, itching, urticaria, angioedema;
other: hypervitaminosis, metabolic disorders, a feeling of heat, dry mouth, paresis of accommodation, retention of urine, drowsiness.
All side effects of the drug should be reported to the doctor.