Opexa (Bilastine)

Bilastine, the active ingredient in Opexa, is an antihistamine presented as a 20 mg tablet for oral use. It treats allergic rhinitis and chronic urticaria in adults and children by selectively blocking peripheral H1 receptors.\n\nGNH India supplies Opexa as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, ensuring quality, regulatory compliance and reliable logistics for global distribution.

Bilastine is an H1‑antagonist that alleviates symptoms of allergic conditions.\n\nAllergic rhinitis (seasonal): Reduces nasal congestion, itching and sneezing.\nChronic idiopathic urticaria: Relieves hives and associated itching.\nAllergic conjunctivitis: Improves eye itching, redness and tearing.

Bilastine is generally well tolerated, but adverse reactions can occur.\n\nCommon Side Effects:\n- Headache\n- Drowsiness or mild fatigue\n- Dry mouth\n- Nausea or abdominal discomfort\n\nSerious or Rare Side Effects:\n- Anaphylactic reaction or angioedema\n- Severe skin reactions such as Stevens‑Johnson syndrome\n- Cardiac arrhythmias or other serious cardiovascular events

When using bilastine, consider the following precautions.\n\nPregnancy: Consult a healthcare professional before use.\nBreastfeeding: Use only if the benefit outweighs potential risk.\nRenal impairment: Dose adjustment may be required in severe cases.\nDrug interactions: Avoid concomitant strong CYP3A4 inhibitors without medical advice.\nDriving or operating machinery: May cause mild drowsiness; assess individual response.\nStore at room temperature: Keep in the original packaging, protect from moisture and direct sunlight.

Bilastine can interact with several medicines; monitoring is advised.\n\nMajor Interactions (Avoid):\n- Ketoconazole: May increase bilastine plasma levels.\n- Erythromycin: May increase exposure and risk of side effects.\n- Ritonavir: Can markedly raise bilastine concentrations.\n\nModerate Interactions (Monitor Closely):\n- Other antihistamines: Additive sedation may occur.\n- Alcohol: May enhance drowsiness.\n- Theophylline: Possible reduction in therapeutic effect.