<p>In case of accidental overdosage, as evidenced by excessive blood pressure elevation, reduce the rate of administration or temporarily discontinue dopamine hydrochloride until the patients condition stabilized. Since the duration of action of dopamine hydrochloride is quite short, no additional measures are usually necessary. If these measures fail to stabilize the patient&#39;s condition, use of the short-acting &alpha;-adrenergic blocking agent such as Phentolamine should be considered.</p>