Children's Dimetapp Decongestant Infant Side Effects

Generic Name: pseudoephedrine

Note: This page contains information about the side effects of pseudoephedrine. Some of the dosage forms included on this document may not apply to the brand name Children's Dimetapp Decongestant Infant.

Not all side effects for Children's Dimetapp Decongestant Infant may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

For the Consumer

Applies to pseudoephedrine: oral capsule, oral capsule extended release, oral capsule liquid filled, oral liquid, oral solution, oral suspension, oral syrup, oral tablet, oral tablet chewable, oral tablet extended release

In addition to its needed effects, some unwanted effects may be caused by pseudoephedrine (the active ingredient contained in Children's Dimetapp Decongestant Infant). In the event that any of these side effects do occur, they may require medical attention.

If any of the following side effects occur while taking pseudoephedrine, check with your doctor or nurse as soon as possible:

Rare - more common with high doses
  • Convulsions (seizures)
  • hallucinations (seeing, hearing, or feeling things that are not there)
  • irregular or slow heartbeat
  • shortness of breath or troubled breathing
Symptoms of overdose
  • Convulsions (seizures)
  • fast breathing
  • hallucinations (seeing, hearing, or feeling things that are not there)
  • increase in blood pressure
  • irregular heartbeat (continuing)
  • shortness of breath or troubled breathing (severe or continuing)
  • slow or fast heartbeat (severe or continuing)
  • unusual nervousness, restlessness, or excitement

Some of the side effects that can occur with pseudoephedrine may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

More common
  • Nervousness
  • restlessness
  • trouble in sleeping
Less common
  • Difficult or painful urination
  • dizziness or light-headedness
  • fast or pounding heartbeat
  • headache
  • increased sweating
  • nausea or vomiting
  • trembling
  • unusual paleness
  • weakness

For Healthcare Professionals

Applies to pseudoephedrine: compounding powder, oral liquid, oral suspension extended release, oral tablet, oral tablet chewable, oral tablet extended release

Cardiovascular

Pseudoephedrine causes vasoconstriction which generally does not produce hypertension, but may be problematic for patients with preexisting hypertension. Arrhythmias may be produced in predisposed patients. Rarely, pseudoephedrine (the active ingredient contained in Children's Dimetapp Decongestant Infant) has been reported to cause coronary artery spasm and chest pain.

One report evaluated the effect with 60 mg of pseudoephedrine on individuals in a hyperbaric chamber at 1 atmosphere (simulated scuba dive to 66 feet of sea water). Pseudoephedrine and depth (simulated) were found to have significant but opposite effects on heart rate, although these effects were unlikely to be clinically significant during diving.

Cardiovascular side effects have included tachycardia. Some patients have developed hypertension and/or arrhythmias.

Nervous system

Nervous system side effects have included insomnia in up to 30% of patients. Tremor, anxiety, nervousness, and headache have also been reported.

Gastrointestinal

Gastrointestinal side effects have included anorexia and gastric irritation in approximately 5% of patients. Dry mouth, nose, or throat have occurred in up to 15% of patients.

Hypersensitivity

Hypersensitivity side effects have included fixed drug eruptions.

Other

False-positive amphetamine immunoassay have resulted from pseudoephedrine (the active ingredient contained in Children's Dimetapp Decongestant Infant) False-positives can occur far below the published pseudoephedrine threshold, indicating that cross-reactivity in human specimens is sometimes greater than the limits reported.

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