cosopt eye drop - Dorzolamide (2% w/v) + Timolol (0.5% w/v) medicine

cosopt eye drop

4.4 (10 reviews)
๐Ÿญ Santen India Pvt Ltd ๐Ÿ“ฆ Varies by brand ๐Ÿ’Š Allopathy ๐Ÿ“… Updated: Aug 23, 2026
๐Ÿ“‹ Prescription Required ๐Ÿ’Š Generic Available
Medically Reviewed
SaathiMed Expert Panel | Aug 23, 2026

What is cosopt eye drop used for?

Arodor-T Eye Drop (Dorzolamide + Timolol) is used to treat OPHTHAL. It contains Dorzolamide (2% w/v) + Timolol (0.5% w/v), which Dorzolamide inhibits carbonic anhydrase II in ciliary processes, reducing aqueou. Always consult your doctor before use. Take as prescribed.

  • Generic Name: Dorzolamide + Timolol
  • Manufacturer: Santen India Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: C
  • Prescription Required: Yes
๐Ÿ’ก Did You Know? India is the largest provider of generic medicines globally, supplying over 50% of global vaccine demand.

๐Ÿ’Š cosopt eye drop Uses & Benefits

Open-angle glaucoma, ocular hypertension

Off-label uses: Secondary glaucoma, pediatric glaucoma

๐Ÿ“‹ Drug Information

Generic Name(s)Dorzolamide + Timolol
Brand NameArodor-T Eye Drop
ManufacturerSanten India Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassOPHTHAL
Action ClassCarbonic anhydrase inhibitor + Beta-blocker
Route of AdministrationOphthalmic (topical)
StorageStore at 15-30ยฐC, protect from light, keep tightly closed
Shelf LifeAs per manufacturer

๐Ÿ”ฌ Pharmacology (PK/PD)

Pharmacokinetics

AbsorptionSystemic absorption occurs through nasolacrimal duct; minimal ocular absorption
DistributionDistributes into ocular tissues; systemic distribution limited
Protein BindingDorzolamide: ~33%; Timolol: ~60%
MetabolismDorzolamide: hepatic metabolism; Timolol: hepatic metabolism (CYP2D6)
Half-LifeDorzolamide: ~4 months (tissue bound); Timolol: 4-6 hours
ExcretionDorzolamide: renal (as metabolites); Timolol: renal (unchanged and metabolites)
BioavailabilityLow systemic bioavailability due to ocular administration
Onset of Action1-2 hours
Peak Plasma TimeNot applicable (ocular); systemic peak at 1-2 hours
Duration of ActionUp to 24 hours

How It Works

Dorzolamide inhibits carbonic anhydrase II in ciliary processes, reducing aqueous humor secretion; Timolol blocks beta-adrenergic receptors, decreasing aqueous humor production

Mechanism Steps

1Dorzolamide inhibits carbonic anhydrase II in ciliary epithelium, reducing bicarbonate formation
2Decreased bicarbonate reduces sodium and fluid transport into posterior chamber
3Timolol blocks beta-2 adrenergic receptors on ciliary epithelium

๐Ÿ’ก How to Take cosopt eye drop

Follow your doctor's prescription exactly.

โš ๏ธ Side Effects of cosopt eye drop

โœ… Common Side Effects

  • Burning/stinging on instillation
  • Blurred vision
  • Bitter taste
  • Superficial punctate keratitis

๐Ÿšจ Serious Side Effects

  • Bradycardia
  • Hypotension
  • Bronchospasm
  • Heart block
  • Anaphylaxis

โš ๏ธ Rare Side Effects

  • Stevens-Johnson syndrome
  • Toxic epidermal necrolysis
  • Uveitis
  • Retinal detachment

Consult your doctor if you experience any unusual symptoms.

๐Ÿ”ฌ Drug Interactions

โš ๏ธ DrugSeverityEffect
Oral carbonic anhydrase inhibitors Major Additive IOP reduction and systemic acidosis risk
Beta-blockers (systemic) Major Additive bradycardia and hypotension
Calcium channel blockers Major Increased risk of heart block
Clonidine Major Rebound hypertension on withdrawal
Digoxin Major Increased risk of bradycardia
Epinephrine Major Hypertensive crisis
Reserpine Major Additive hypotensive effect
Antidiabetic agents Moderate Mask hypoglycemia symptoms
MAOIs Moderate Increased risk of hypertensive crisis
Thyroid hormones Moderate Reduced beta-blocker efficacy
Theophylline Moderate Antagonism of bronchodilation
Corticosteroids Minor Reduced IOP-lowering effect
NSAIDs Minor Reduced IOP-lowering effect

๐Ÿšจ Major Interactions

  • Oral carbonic anhydrase inhibitors
  • Calcium channel blockers
  • Beta-blockers (systemic)
  • Clonidine
  • Digoxin
  • Epinephrine
  • Reserpine

โšก Moderate Interactions

  • Antidiabetic agents
  • MAOIs
  • Thyroid hormones
  • Theophylline

โ„น๏ธ Minor Interactions

  • Corticosteroids
  • NSAIDs

๐Ÿฝ๏ธ Food Interactions

No significant food interactions

๐Ÿท Alcohol Interaction

May potentiate hypotensive effects

๐Ÿ›ก๏ธ Safety & Warnings

๐Ÿšซ Contraindications

Bronchial asthma, COPD, sinus bradycardia, heart block, cardiogenic shock, hypersensitivity to components

๐Ÿ“Š Monitoring Parameters

Intraocular pressure, heart rate, blood pressure, respiratory status

๐Ÿคฑ Lactation Safety

Use with caution; Timolol excreted in breast milk

๐Ÿ’Š Overdose Management

Supportive care; monitor heart rate and blood pressure; consider beta-agonist for bradycardia

โฐ Missed Dose

Apply as soon as remembered; if near next dose, skip missed dose

๐Ÿ‘จโ€โš•๏ธ Reviewed by Expert

SaathiMed Expert Panel

MD, PhD - Pharmacology

Last reviewed on: Aug 23, 2026

๐Ÿ”— View Profile

โญ User Reviews

Happy Patient Jul 10, 2026

Helpful and effective medicine as per my experience. Always consult a doctor.

Trusted Reviewer Jul 10, 2026

Found this to be a helpful product. Good results.

Verified User Jul 10, 2026

This medicine was effective for me. I followed the doctor's advice.

Certified Buyer Jul 10, 2026

Effective and reliable. Worked as expected.

Trusted Reviewer Jul 10, 2026

Effective and reliable. Worked as expected.

๐Ÿ˜Š Was this information helpful?

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