Lubrex Eye Drop contains Carboxymethylcellulose 0.5% w/v, a viscoelastic agent used primarily as a lubricant and artificial tear substitute for the management of dry eye symptoms. It is indicated for the relief of ocular discomfort associated with dryness of the eye, irritation due to environmental factors, or exposure to wind and sun. Carboxymethylcellulose acts by stabilizing the tear film and providing prolonged ocular surface hydration, thereby reducing irritation, burning, and foreign body sensation. The formulation is isotonic and preservative-free, minimizing the risk of hypersensitivity reactions and ensuring compatibility with the ocular tissues. Lubrex Eye Drop is suitable for frequent use and can be administered as needed to maintain ocular comfort. It is contraindicated in patients with known hypersensitivity to any component of the formulation. Caution is advised in contact lens wearers; lenses should be removed prior to instillation and may be reinserted 15 minutes after application. Adverse effects are rare but may include transient blurred vision or mild ocular irritation. Lubrex Eye Drop provides an effective, safe, and well-tolerated option for the symptomatic treatment of dry eyes, enhancing patient comfort and ocular surface health.