Who should not take Allegra
A contraindication is a condition under which Allegra (Fexofenadine) should not be taken because the risk outweighs the benefit. Allegra has both absolute contraindications (do not use) and relative cautions (use only after careful review). This page summarises both at the 30mg, 60mg, 120mg, 180mg dosing range.
Absolute contraindications
According to the prescribing information for Fexofenadine, absolute contraindications typically include severe allergic reactions to the active ingredient or excipients, severe hepatic or renal impairment, certain cardiovascular conditions, and concurrent use of specific interacting medications. The exact list depends on the molecule and is detailed in the official label.
Relative cautions
Relative cautions are situations where Allegra can be used but with extra monitoring, dose reduction or alternative considered. These often include mild-to-moderate organ impairment, age extremes, multiple comorbidities, and complex medication regimens. Fexofenadine selectively blocks peripheral H1 histamine receptors, antagonising the effects of histamine on vasodilation, capillary permeability, sensory nerve endings and smooth muscle.
Frequently asked questions
Can someone with heart disease take Allegra? ▾
Some forms of heart disease are absolute contraindications for Allegra, particularly with nitrate use or recent cardiovascular events. Stable, well-controlled cardiovascular disease may allow Allegra use under specialist supervision. The prescribing information for Fexofenadine should be reviewed.
Is Allegra safe with kidney problems? ▾
Mild to moderate kidney impairment usually allows Allegra at adjusted lower 30mg, 60mg, 120mg, 180mg doses. Severe kidney failure is often a contraindication or requires substantial dose reduction. The prescriber decides based on lab results and concurrent medications.
More on Allegra
- With alcoholAllegra and alcohol — is it safe to drink?
- With foodShould Allegra be taken with food?
- Side effectsAllegra side effects: common, rare and warning signs
- Dosage guideAllegra dosage guide: how much to take and when
- OnsetHow fast does Allegra start working?
- DurationHow long does Allegra last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.