HSA Reclassified Drug | Exemptions For Supply of Alcaftadine Without Prescription


Eligible Active Ingredient: Alcaftadine. As eyedrops not exceeding 0.25%
With Effective From: 1-Jun-17
Indication Permitted: Prevention of itching associated with allergic conjunctivitis
Maximum Daily Dose: One drop into affected eye once daily
Maximum Supply per Transaction: 3ml
Minimum Age of User: 3 years
Patient Information Leaflet from HSA/PSS: Download PIL (Link to HSA website)

Mechanism of Action of Alcaftadine

Alcaftadine is a H1 histamine receptor antagonist and inhibitor of the release of histamine from mast cells. Decreased chemotaxis and inhibition of eosinophil activation has also been demonstrated.

Additional Information of Alcaftadine

Pharmacology Class: Decongestants And Antiallergics
Therapeutic Class: Ophthalmologicals
Chemical Class: Other Antiallergics
Synonyms: 6,11-Dihydro-11-(1-Methyl-4-piperidinylidene)-5H-iMidazo[2,1-b][3]benzazepine-3-carboxaldehyde | Alcaftadina | Alcaftadinum | Vilasta

Show All HSA-registered therapeutic products granted exemption to supply without prescription


  1. Health Science Authority of Singapore – Reclassified POM
  2. Drugbank

HSA-Registered Products Containing Alcaftadine As eyedrops not exceeding 0.25%

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This list is not exhaustive. HSA collaborates with Pharmaceurical Society of Singapore (PSS) to review the appropriate use of therapeutic products in the community from time to time. Hence, HSA may enable the supply of a Prescription Only Medicine (POM) by pharmacists without a prescription, upon review that the product can be used in a safe and effective manner under the supervision of a pharmacist. This can be effected through legislative mechanisms in the absence of an application made by the product registrant to reclassify the therapeutic product, subject to to conditions including indication, strength, maximum daily dose, maximum supply quantity, and age restriction.