Allegra-D 24 Hour Side Effects
Please note - some side effects for Allegra-D 24 Hour may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA at http://www.fda.gov/medwatch/ or 1-800-FDA-1088 (1-800-332-1088).
Side Effects of Allegra-D 24 Hour - for the Consumer
Allegra-D 24 Hour Extended-Release Tablets (24 Hour)
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Allegra-D 24 Hour Extended-Release Tablets (24 Hour):
Seek medical attention right away if any of these SEVERE side effects occur when using Allegra-D 24 Hour Extended-Release Tablets (24 Hour):Dizziness; dry mouth; headache; nausea; nervousness; trouble sleeping.
TopSevere allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; difficult urination; fast/irregular heartbeat; hallucinations; mental or mood changes; seizures; involuntary shaking or tremor.
Allegra-D 24 Hour Side Effects - for the Professional
Allegra-D 24 Hour
Fexofenadine Hydrochloride
In a placebo-controlled clinical study in the United States, which included 570 subjects with seasonal allergic rhinitis aged 12 years and older receiving fexofenadine hydrochloride tablets at doses of 120 or 180 mg once daily, adverse events were similar in fexofenadine hydrochloride and placebo-treated subjects. The following table lists adverse experiences that were reported by greater than 2% of subjects treated with fexofenadine hydrochloride tablets at doses of 180 mg once daily and that were more common with fexofenadine hydrochloride than placebo.
| Adverse experience | Fexofenadine 180 mg once daily (n=283) |
Placebo (n=293) |
|---|---|---|
| Headache | 10.6% | 7.5% |
| Upper Respiratory Tract Infection | 3.2% | 3.1% |
| Back Pain | 2.8% | 1.4% |
Events that have been reported during controlled clinical trials involving subjects with seasonal allergic rhinitis at incidences less than 1% and similar to placebo and have been rarely reported during postmarketing surveillance include: insomnia, nervousness, and sleep disorders or paroniria. In rare cases, rash, urticaria, pruritus and hypersensitivity reactions with manifestations such as angioedema, chest tightness, dyspnea, flushing and systemic anaphylaxis have been reported.
Pseudoephedrine Hydrochloride
Pseudoephedrine hydrochloride may cause mild CNS stimulation in hypersensitive patients. Nervousness, excitability, restlessness, dizziness, weakness, or insomnia may occur. Headache, drowsiness, tachycardia, palpitation, pressor activity, and cardiac arrhythmias have been reported. Sympathomimetic drugs have also been associated with other untoward effects such as fear, anxiety, tenseness, tremor, hallucinations, seizures, pallor, respiratory difficulty, dysuria, and cardiovascular collapse.
TopSide Effects by Body System
Gastrointestinal
Gastrointestinal side effects have included nausea (7.4 %), dry mouth (2.8%), dyspepsia (2.8 %), throat irritation (2.3%), and abdominal pain (1.4 %).
Cardiovascular
Cardiovascular side effects have included palpitations (1.9%).
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 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.
Nervous system
Nervous system side effects have included headache (13 %), insomnia (12.6%), dizziness (1.9%), agitation (1.9%), nervousness (1.4%), and anxiety (1.4%).
Hypersensitivity
In rare cases, rash urticaria, pruritus, angioedema, chest tightness, dyspnea, flushing and systemic anaphylaxis have been reported.
Hypersensitivity reactions have included fixed drug eruptions.
Respiratory
Respiratory side effects have included upper respiratory infections (1.4%).
Musculoskeletal
Musculoskeletal side effects have included back pain (1.9%).
TopMore resources:
Allegra-D 24 Hour Extended-Release Tablets (24 Hour)
Allegra-D 24 Hour - Includes detailed dosage instructions.
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