Carboxymethyl Cellulose: Brands, Price & Uses in Bangladesh

Established / OTC-Approved Use

Carboxymethyl Cellulose (also known as carmellose sodium or sodium carboxymethylcellulose) is an ophthalmic demulcent/lubricant that is established, under FDA OTC ophthalmic drug monographs, for the temporary relief of burning, irritation, and discomfort due to dryness of the eye (dry eye syndrome, keratoconjunctivitis sicca) and for relief of eye discomfort caused by exposure to wind, sun, or other minor environmental irritants.

• Symptomatic relief of dry, gritty, burning, or irritated eyes
• Protection of the ocular surface from further dryness/irritation (as a demulcent/protectant)
• Use as a lubricant to reduce discomfort associated with artificial eye prostheses (some formulations are labeled for this)

Adjunct Use

Carboxymethyl Cellulose eye drops are commonly used as an adjunct lubricant before or after ophthalmic procedures, contact lens wear, or alongside other prescription eye medications to counter ocular surface dryness.

Other Pharmaceutical Uses (Non-Ophthalmic Formulations)

In some markets, oral formulations containing Carboxymethyl Cellulose are used as a bulk-forming agent for the management of constipation and for regulating stool consistency (e.g., after ileostomy/colostomy). This is a formulation-specific, less common use compared to the ophthalmic lubricant use, which is the form most widely available and used in Bangladesh.

Carboxymethyl Cellulose is also widely used as a pharmaceutical excipient (viscosity-modifying, suspending, and binding agent) in tablets, oral suspensions, and topical/ophthalmic gel formulations; in this role it is not itself the therapeutic agent.

Ophthalmic Lubricant (most common use)

Administration Instructions

• Wash hands before use.
• Tilt the head back, pull down the lower eyelid to form a small pocket, and instill the drop(s) without letting the dropper tip touch the eye, eyelid, fingers, or any other surface.
• Close the eye gently for 1-2 minutes after instillation.
• If using other eye drops or ointments at the same time, wait at least 5-10 minutes between different products.
• Replace the cap securely after each use.

Oral Bulk-Forming Use (where marketed)

When used as an oral bulk-forming agent, Carboxymethyl Cellulose tablets/granules should be taken with a full glass of water (and adequate fluid intake maintained throughout the day) exactly as directed by a physician or on the product label, as inadequate fluid intake with bulk-forming agents can increase the risk of choking or intestinal obstruction.

Carboxymethyl Cellulose ophthalmic products are generally very well tolerated. Reported adverse effects are typically mild and transient:

• Temporary blurred vision immediately after instillation
• Mild stinging, burning, or a foreign-body/sticky sensation in the eye on instillation
• Eye redness or irritation (uncommon)
• Rare hypersensitivity reactions (itching, swelling, redness) - usually related to a preservative rather than Carboxymethyl Cellulose itself

With oral bulk-forming formulations, gastrointestinal effects such as bloating, flatulence, or abdominal cramping may occur, particularly if fluid intake is inadequate.