Zinc Sulfate + Boric Acid + Borax + MentholThird Party Manufacturing in India

Zinc Sulfate + Boric Acid + Borax + Menthol is a multi-ingredient topical preparation that combines antimicrobial, astringent, and soothing actions for the eye and ear. Boric acid is a mild antiseptic that creates an acidic environment on the mucosal surface, which discourages the growth of bacteria and fungi. It helps cleanse the eye and reduces irritation from environmental irritants. Borax, or sodium tetraborate, complements boric acid by buffering the solution and contributing to the overall antimicrobial effect while helping retain moisture on the ocular surface. Zinc sulfate works as an astringent — it precipitates proteins on the surface of tissues, tightening the conjunctival membranes and reducing blood vessel dilation. This action helps decrease redness, swelling, and excessive tear production. Zinc also plays a role in supporting the natural healing of epithelial tissues on the ocular surface. Menthol activates cold-sensitive TRPM8 receptors in sensory nerve endings, producing a distinct cooling sensation that overrides discomfort signals and provides immediate soothing relief. Together, these ingredients provide effective temporary relief from eye strain, redness due to dust or pollutants, and minor ear irritation without treating underlying infections. Its balanced formulation makes it a popular choice for over-the-counter eye and ear care.

Zinc Sulfate + Boric Acid + Borax + Menthol is a topical ophthalmic and otic solution used for symptomatic relief of mild eye and ear discomfort. It provides temporary relief through its combined antimicrobial, astringent, and soothing actions.

Therapeutic Uses

• Ocular Redness and Irritation: Relieves non-infectious redness, burning, and irritation caused by dust, smoke, allergens, and environmental pollutants
• Eye Strain: Provides soothing relief from eyestrain associated with prolonged screen use, reading, or driving
• Mild Conjunctival Congestion: Helps reduce mild conjunctival redness and swelling through the astringent action of zinc sulfate
• Dry Eye Symptoms: The buffered solution of boric acid and borax helps maintain moisture and provides a refreshing, lubricating effect
• Minor Ear Irritation: Used as ear drops for mild irritation and gentle cleansing of the external ear canal

Why Manufacturers Choose This Combination

This multi-ingredient ophthalmic/otic preparation is one of the most widely manufactured over-the-counter eye care products in India. Its established safety profile, decades of clinical use, and high consumer demand make it a staple product for PCD franchise companies and contract manufacturers. The formulation is simple to manufacture with standard ophthalmic production lines, and the raw materials — boric acid, borax, zinc sulfate, and menthol — are all readily available from Indian API suppliers. The 10 ml dropper bottle format is cost-effective and commands consistent demand across retail pharmacy and hospital supply channels.

This makes Zinc Sulfate + Boric Acid + Borax + Menthol one of the most sought-after combinations for third party manufacturing in India, with steady demand from PCD franchise operators and institutional buyers.