In cases of overdose or accidental oral administration, the following symptoms occur: mydriasis, nausea, vomiting, cyanosis, fever, convulsions, heart rhythm disturbance, cardiac arrest, hypertension, pulmonary edema, respiratory function, hallucinations.
Patients may also have symptoms of CNS depression, accompanied by drowsiness, lower body temperature, bradycardia, shock, stopping breathing and coma.
Treatment.
The use of activated carbon, gastric lavage, oxygen ventilation of the lungs. To reduce blood pressure prescribed 5 mg phentolamine in a 0.9% solution of sodium chloride by slow intravenous administration or 100 mg of phentolamine orally. Vasoconstrictors are contraindicated.If necessary, antipyretic and anticonvulsant drugs are used.