Allerx-D Side Effects

Generic name: methscopolamine / pseudoephedrine

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

Some side effects of Allerx-D may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

For the Consumer

Applies to methscopolamine / pseudoephedrine: extended-release tablets

Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Constipation; diarrhea; dizziness; drowsiness; dry mouth, nose, or throat; excitability; headache; loss of appetite; nausea; nervousness or anxiety; restlessness; trouble sleeping; upset stomach; vomiting; weakness.

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; mental or mood changes; seizures; severe dizziness, lightheadedness, or headache; tremor; vision changes.

For Healthcare Professionals

Applies to methscopolamine / pseudoephedrine: oral tablet extended release

Cardiovascular

Cardiovascular side effects have included cardiac palpitations. In general, sympathomimetics have been associated with tachycardia, arrhythmias, and cardiovascular collapse with hypotension.

Nervous system

Nervous system side effects have included drowsiness, lassitude, increased irritability and excitement (especially in children). Other side effects associated with sympathomimetic amines have included headache, dizziness, anxiety, fear, nervousness, restlessness, tremor, weakness, insomnia, hallucinations, convulsions, and CNS depression.

Antihistamines and anticholinergic drugs side effects have included drowsiness and dizziness.

Gastrointestinal

Gastrointestinal side effects have included nausea and excessive dryness of the mouth, nose and throat.

Ocular

Ocular side effects have included blurred vision.

Genitourinary

Genitourinary side effects associated with the used of sympathomimetic amines have included dysuria and urinary retention in patients with prostatic hypertrophy.

Respiratory

Respiratory side effects associated with the use of sympathomimetics have included respiratory difficulty.

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