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Allermed Side Effects

Generic Name: pseudoephedrine

Note: This document contains side effect information about pseudoephedrine. Some of the dosage forms listed on this page may not apply to the brand name Allermed.

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

Along with its needed effects, pseudoephedrine (the active ingredient contained in Allermed) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur while taking pseudoephedrine:

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 side effects of pseudoephedrine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

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 capsule, oral liquid, oral suspension extended release, oral tablet, oral tablet chewable, oral tablet extended release

General

The most commonly reported adverse effects have included cardiovascular and (e.g. elevated blood pressure, tachycardia, or arrhythmias), CNS stimulation (e.g. restlessness, insomnia, anxiety, tremors, and rarely hallucinations), skin rashes, and urinary retention.[Ref]

Cardiovascular

Frequency not reported: Tachycardia, palpitations, arrhythmia, hypertension, impaired circulation to the extremities[Ref]

Nervous system

Frequency not reported: Headache, tremor

Gastrointestinal

Frequency not reported: Dry mouth, nausea, vomiting

Hypersensitivity

Frequency not reported: Hypersensitivity reactions including cross-sensitivity with other sympathomimetic[Ref]

Psychiatric

Rare (less than 0.1%): Hallucinations
Frequency not reported: Restlessness, insomnia, sleep disturbances, anxiety, excitability[Ref]

Genitourinary

Frequency not reported: Urinary retention, especially in men with prostatic enlargement

Ocular

Frequency not reported: Angle-closure glaucoma

Dermatologic

Frequency not reported: Skin rashes, fixed drug eruption in the form of erythematous nodular patches[Ref]

Other

Post marketing reports: False-positive amphetamine immunoassay[Ref]

False-positives can occur far below the published threshold indicating that cross-reactivity in human specimens is sometimes greater than the limits reported.[Ref]

References

1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

2. "Product Information. Sudafed (pseudoephedrine)." Glaxo Wellcome, Research Triangle Park, NC.

3. Cerner Multum, Inc. "Australian Product Information." O 0

4. Depriest AZ, Knight JL, Doering PL, Black DL "Pseudoephedrine and false-positive immunoassay urine drug tests for amphetamine." Pharmacotherapy (2012):

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.

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