"The US Food and Drug Administration has approved AstraZeneca's Symbicort inhalation aerosol (80/4.5 mcg) for children aged 6 to 12 years with asthma that is not well controlled with an inhaled corticosteroid, the company has announced.
There have been no reports, in the literature, of overdosage with LUFYLLIN (dyphylline) . However, the following information based on reports of theophylline overdosage are considered typical of the xanthine class of drugs and should be kept in mind.
Signs and symptoms: Restlessness, anorexia, nausea, vomiting, diarrhea, insomnia, irritability, and headache. Marked overdosage with resulting severe toxicity has produced agitation, severe vomiting, dehydration, excessive thirst, tinnitus, cardiac arrhythmias, hyperthermia, diaphoresis, and generalized clonic and tonic convulsions. Cardiovascular collapse has also occurred, with some fatalities. Seizures have occurred in some cases associated with very high theophylline plasma concentrations, without any premonitory symptoms of toxicity.
Treatment: There is no specific antidote for overdosage with drugs of the xanthine class. Symptomatic treatment and general supportive measures should be instituted with careful monitoring and maintenance of vital signs, fluids, and electrolytes. The stomach should be emptied by inducing emesis if the patient is conscious and responsive, or by gastric lavage, taking care to protect against aspiration, especially in stuporous or comatose patients. Maintenance of an adequate airway is essential in case oxygen or assisted respiration is needed. Sympathomimetic agents should be avoided but sedatives such as short-acting barbiturates may be useful.
Dyphylline is dialyzable and, although not recommended as a routine procedure in overdosage cases, hemodialysis may be of some benefit when severe intoxication is present or when the patient has not responded to general supportive and symptomatic treatment.
Hypersensitivity to dyphylline or related xanthine compounds.This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 1/20/2005
Additional Lufyllin Information
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