No data are available on overdosage with Nebivolol.
Symptoms: Symptoms of overdosage with betablockers are: bradycardia, hypotension, bronchospasm and acute cardiac insufficiency.
Treatment: In case of overdosage or hypersensitivity, the patients should be kept under close supervision and be treated in an intensive care ward. Blood glucose levels should be checked. Absorption of any drug residues still present in the gastrointestinal tract can be prevented by gastric lavage and the administration of activated charcoal and a laxative. Artificial respiration may be required. Bradycardia or extensive vagal reactions should be treated with plasma/plasma substitutes and, if necessary, catecholamines. The beta-blocking effect can be counteracted by slow intravenous administration of isoprenaline hydrochloride, starting with a dose of approximately 5 μg/minute, or dobutamine, starting with a dose of 2.55 μg/minute until the required effect has been obtained. In refractory cases isoprenaline can be combined with dopamine. If this does not produce the desired effect either, intravenous administration of glucagon 500-100 μg/kg i.v. may be considered. If required, the injection should be repeated within in one hour, to be followed if required by an i.v. infusion of glucagon 70 μg/kg/h. In extreme cases of treatment-resistant bradycardia, a pacemaker maybe inserted.
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