Cromolyn Eye Drops are offered in a sterile container having 5ml, 10ml and 15ml sterile ophthalmic solution.

Each ml of Cromolyn Eye Drops contain;

  • Sodium Cromoglycate 40mg
  • Tetrahydrozoline HCl 0.5mg

How Cromolyn Eye Drops Work?

  • Sodium Cromoglycate
    appears to act primarily through a local effect by inhibiting the degranulation of sensitized mast cells occurring after exposure to specific antigens, thus inhibiting the release of histamine and SRS-A (slow reacting substance of anaphylaxis) from the mast cells.
  • Tetrahydrozoline
    is a non-adrenergic vasoconstrictor. When used topically, it effectively constricts the conjunctival and episcleral vessels, eliminates redness, burning, itching and reduces excessive tearing. This leads to a fast and distinct relief even in difficult cases.

What is Cromolyn Eye Drops used for? > Indications

Cromolyn Eye Drops 10ml ContainerCromolyn is a highly effective combination to control the symptoms of burning, itching, tearing and photophobia. Cromolyn Eye Drops are particularly suitable in eye allergic conditions like hay-fever conjunctivitis, acute and chronic allergic conjunctivitis, vernal keratoconjunctivitis and giant papillary conjunctivitis. Cromolyn is very effective in those allergic conjunctivitis, where a prolonged treatment is needed and where irregular use of steroids is required.

When to avoid Cromolyn Eye Drops?

Cromolyn should not be used in patients with glaucoma, hypertension, cardiac disorders, hyperthyroidism and diabetes. In the treatment of children, the product containing vasoconstrictor, should be used under the direct supervision of an ophthalmologist and should not be used in children under five years. Its safety in pregnancy has not been established.

Cromolyn Eye Drops should not be used in patients with known hypersensitivity to any of its components.

Cromolyn Side Effects

Transient stinging, burning sensation, irritation, pupillary dilation may occur after local use of product containing vasoconstrictor. Due to systemic absorption, some patients may complain of drowsiness, headache, hypertension, cardiac irregularities and hyperglycemia. If the condition persists discontinue using Cromolyn Eye Drops and consult an ophthalmologist.


Since sodium cromoglycate has a preventive action, therefore the patients showing positive response should continue the treatment. If the treatment is required to be discontinued, the Cromolyn Eye Drops must be withdrawn gradually over a period of one week. Symptoms of conjunctivitis may reappear in case of discontinuation.

Cromolyn contains vasoconstrictor, it should be used with caution in patients taking antidepressive drugs.

Cromolyn Eye Drops must be kept out of the reach of children as accidentally swallowing may cause sedative effects and in some cases other toxic symptoms may appear.

Dosage & General Information for Patients

Instill 1 to 2 drops of Cromolyn into the eyes 4 times a day.

  • A transient stinging or burning sensations may occur after instillation, which usually disappears with continued use.
  • Do not wear soft contact lenses during treatment. Lenses may be worn a few hours after discontinuation of drug.
  • Administer the Cromolyn Eye Drops at regular intervals.
  • Once opened, use within 4 weeks.
  • Protect Cromolyn Eye Drops from direct sunlight and heat, store the container in a cool place, away from children’s reach and do not freeze.