Fextiva Tablets


COMPOSITION

FEXTIVA 120

Fexofenadine                          120 mg

FEXTIVA 180

Fexofenadine                          180 mg

Introduction

Fextiva tablet contain fexofenadine hydrochloride.  It is third generation anti-histamine which has ability to pass through blood brain barrier. It also causes sedation.

 

Indication

  • Seasonal allergic symptoms
  • Hives and skin itching
  • Decrease allergy symptoms

 

Dosage

Once daily before a meal or as directed by the physician.

 

Mechanism of action

It produces its action by competing with free histamine for binding at H-1 receptor which is present in GI tract and bronchial smooth muscle. This causes blocking of actions of endogeneous histamine and produces relief in negative symptoms caused by histamine.

 

Pharmacology

Absorption

After oral administration it is about 33% absorbed in the body.

Distribution

About 60-70% of the drug is bound to plasma protein. The metabolism of the drug is through cytochrome P450 3A4 and by intestinal micro flora.

Excretion

The drug is excreted through feces and urine. The elimination half life is 14.4hrs.

 

Contraindications

  • Hypersensitivity to fexofenadine or any of the ingredient present
  • Rare cases of hypersensitivity reactions with manifestations such as angioedema, flushing, dyspepsia and chest tightness.

 

Precautions

  • In pregnant patients
  • Co administration with other drugs
  • Allergic to any other conditions