Generic Allegra 180mg, containing fexofenadine hydrochloride, blocks histamine receptors in your body. Histamine is a chemical your body releases during allergic reactions, causing symptoms like sneezing, runny nose, and itchy eyes. By preventing histamine from binding to these receptors, fexofenadine reduces these allergy symptoms.
This medication is a non-sedating antihistamine, meaning it’s less likely to cause drowsiness than some other allergy medications. It’s absorbed well after oral administration, reaching peak blood levels within 2.5 hours. The effects last for approximately 24 hours, providing all-day allergy relief with a single dose.
Fexofenadine’s mechanism differs from some other antihistamines; it acts selectively on peripheral H1 receptors, minimizing the impact on the central nervous system and resulting in a lower risk of sedation. Dosage should always follow your doctor’s instructions; adjusting the dosage is not recommended without consulting a medical professional.
Remember to take this medication with a full glass of water. While generally well-tolerated, potential side effects include headache, drowsiness (although uncommon), and stomach upset. If you experience any adverse effects, consult your doctor or pharmacist immediately. Always inform your healthcare provider about all medications you are taking to avoid potential interactions.
