Symptoms: In cases of overdose or inadvertent ingestion, the following symptoms may occur: mydriasis, nausea, vomiting, cyanosis, fever, convulsions, tachycardia, cardiac arrhythmia, cardiac arrest, increased blood pressure, pulmonary edema, respiratory function, hallucinations.
Patients may also experience symptoms of central nervous system depression, accompanied by drowsiness, decreased body temperature, bradycardia, shock, respiratory arrest and coma.
Treatment: application of activated carbon, gastric lavage, oxygen
ventilation of lungs. To reduce blood pressure, 5 mg of phentolamine is used in a 0.9% solution of sodium chloride by slow intravenous injection or 100 mg of phentolamine inside. Vasoconstrictive drugs are contraindicated. If necessary, antipyretic and anticonvulsant drugs are used.