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Pseudovent 400 Capsules
This product is comprised of pharmacologically different compounds (pseudoephedrine and guaifenesin). Therefore, it is difficult to predict the exact manifestation of symptoms in a given individual. A description of symptoms which are likely to appear after ingestion of an excess of individual components follows:
Signs and symptoms: Overdosage with sympathomimetic amines can cause cardiac arrhythmias, cerebral hemorrhage and pulmonary edema. It can also cause palpitation, tremor, dizziness, vomiting, fear, labored breathing, headache, dryness of mouth, pallor, weakness, panic, anxiety, confusion, hallucinations, and delirium.
Overdosage with guaifenesin is unlikely to produce toxic effects since its toxicity is low. Guaifenesin, when administered by stomach tube to test animals in doses up to 5 gm/kg, produced no signs of toxicity.
Treatment: The treatment described below is for pseudoephedrine overdose.
The treatment of overdosage should provide symptomatic and supportive care. If the amount ingested is considered dangerous or excessive, induce vomiting with ipecac syrup, unless the patient is convulsing, comatose, or has lost the gag reflex, in which case perform gastric lavage using a large bore tube. If indicated, follow with activated charcoal and a saline cathartic. Ammonium chloride may acidify the urine to increase urinary excretion of pseudoephedrine.
This product is contraindicated in patients with hypersensitivity to guaifenesin or with hypersensitivity or idiosyncrasy to sympathomimetic amines which may be manifested by insomnia, dizziness, weakness, tremor, or arrhythmias. Patients known to be hypersensitive to other sympathomimetic amines may exhibit cross sensitivity with pseudoephedrine.
Pseudoephedrine is contraindicated in patients with hypertension, ventricular tachycardia, narrow-angle glaucoma or urinary retention and should be employed only with extreme caution in elderly patients or in patients with hyperthyroidism, bradycardia, partial heart block, myocardial disease, or severe arteriosclerosis.
Last reviewed on RxList: 3/24/2008
Additional Pseudovent 400 Capsules Information
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