-5%
- Delfex 120 mg Tablet is a second-generation antihistamine used to alleviate allergic symptoms such as itching, swelling, and skin rashes. It works by blocking the action of histamine, a chemical released by the body during allergic reactions. Compared to older antihistamines, Delfex is less likely to cause drowsiness.
- Avoid fruit juices like apple, orange, or grapefruit while taking Delfex, as they may reduce the effectiveness of the medication.
- Nausea may occur as a side effect. Eating light, non-spicy meals may help alleviate this.
- Antacids can interfere with Delfex absorption. Do not take antacids within 30 minutes before or after taking this medicine.
Fexofenadine, the active component of Delfex, is a selective histamine H1 receptor inverse agonist. Upon exposure to allergens, immune cells such as mast cells and basophils release histamine, triggering allergic symptoms like a runny nose, itching, sneezing, and watery eyes.
Fexofenadine stabilizes the inactive form of the H1 receptor, thereby preventing activation and histamine-induced inflammatory responses. It exhibits high specificity for peripheral H1 receptors without interacting with dopamine, serotonin, cholinergic, or adrenergic receptors. Notably, it does not cross the blood-brain barrier, minimizing the risk of central nervous system side effects such as sedation.