To indicate the frequency of side effects, the following classification is used, according to WHO: very often (> 1/10), often (> 1/100 and <1/10), infrequently (> 1/1000 and <1/100), rarely (> 1/10000 and <1/1000), very rarely (<1/10000), the frequency is unknown (can not be calculated from available data).
The undesirable phenomena that develop as a result of the use of sulpiride are similar to undesirable phenomena caused by other psychotropic agents, but the frequency of their development is, in general, less.
From the endocrine system: often: hyperprolactinemia.
From the liver and bile ducts: often: increased activity of "liver" enzymes.
From the nervous system: often: sedation, drowsiness, extrapyramidal disorders (these symptoms are usually reversible after the administration of antiparkinsonian drugs), parkinsonism, tremor, akathisia; infrequently: muscular hypertonia, dyskinesia, muscular dystonia;
rarely: oculogic crisis; frequency is unknown: malignant neuroleptic syndrome, hypokinesia, tardive dyskinesia (after taking for more than 3 months,as well as when taking other neuroleptics, while taking antiparkinsonian drugs is ineffective or can provoke an increase in symptoms), seizures.
From the cardiovascular system: infrequently: orthostatic hypotension; rarely: ventricular arrhythmias, ventricular fibrillation, ventricular tachycardia; frequency is unknown: prolongation of the QT interval, pirouette ventricular tachycardia, cardiac arrest, sudden death, venous thromboembolic complications, including pulmonary embolism and deep vein thrombosis, sometimes fatal; increase in blood pressure (see section "Special instructions").
From the genitals and mammary glands: infrequently: enlargement of mammary glands, amenorrhea, orgasmic dysfunction, erectile dysfunction; often: soreness of the mammary glands, galactorrhea; frequency is unknown: gynecomastia.
From the skin and subcutaneous tissues: often: maculopapular rash.
Common violations: often: increase in body weight.
From the side of the blood and lymphatic system: infrequently: leukopenia; frequency is unknown: neutropenia, agranulocytosis.
From the side of the psyche: often: insomnia.
From the gastrointestinal tract: infrequently: hypersalivation.
From the immune system: frequency is unknown: anaphylactic reactions (hives, shortness of breath, excessive decrease
arterial pressure, anaphylactic shock).
From the side of the musculoskeletal and connective tissue: frequency is unknown: torticollis, trismus.
Pregnancy, postpartum period and perinatal condition: frequency is unknown: the syndrome of "withdrawal" of the drug in newborns (see the section "Application during pregnancy and during breastfeeding").