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Deaths have been reported in children less than 2 years of age who were taking carbinoxamine-containing drug products; therefore, Karbinal ER is contraindicated in children younger than 2 years of age.
Activities Requiring Mental Alertness
Karbinal ER may produce marked drowsiness and impair the mental or physical abilities required for the performance of potentially hazardous tasks such as driving a car or operating machinery. Advise patients to avoid engaging in hazardous tasks requiring mental alertness and motor coordination after ingestion of Karbinal ER. Avoid concurrent use of Karbinal ER with alcohol or other central nervous system depressants because additional impairment of central nervous system performance may occur.
Concomitant Medical Conditions
Karbinal ER has anticholinergic (atropine-like) properties and, therefore, should be used with caution in patients with: increased intraocular pressure, narrow angle glaucoma, hyperthyroidism, cardiovascular disease, hypertension, stenosing peptic ulcer, symptomatic prostatic hypertrophy, bladder neck obstruction, or pyloroduodenal obstruction.
Allergic Reactions due to Sulfites
Karbinal ER contains sodium metabisulfite, a sulfite that may cause allergic-type reactions, including anaphylaxis and life-threatening or less severe asthmatic episodes, in susceptible individuals. The overall prevalence of sulfite sensitivity in the general population is unknown and probably low. Sulfite sensitivity is seen more frequently in asthmatic than in nonasthmatic individuals.
Advise patients to measure Karbinal ER with an accurate milliliter measuring device. A household teaspoon is not an accurate measuring device and could lead to overdosage. A pharmacist can recommend an appropriate measuring device and can provide instructions for measuring the correct dose.
Use In Specific Populations
Pregnancy Category C
Animal reproductive studies have not been conducted with carbinoxamine maleate. It is also not known whether Karbinal ER can cause fetal harm when administered to a pregnant woman or can affect reproductive capacity. Karbinal ER should be given to a pregnant woman only if clearly needed.
Labor and Delivery
The effect of Karbinal ER on labor and delivery is not known.
Because of the risk of mortality in infants given carbinoxamine-containing drugs, use of Karbinal ER is contraindicated in nursing mothers.
Deaths have been reported in children younger than 2 years of age who were taking carbinoxaminecontaining drug products. Therefore, Karbinal ER is contraindicated in children younger than 2 years of age and in nursing mothers. Carbinoxamine may diminish mental alertness or produce sedation in children. Paradoxical reactions with excitation are more likely in younger children.
Last reviewed on RxList: 4/15/2013
This monograph has been modified to include the generic and brand name in many instances.
Additional Karbinal ER Information
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Allergies & Asthma
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