Oxybuprocaine


Generic Medicine Info
Indications and Dosage
Ophthalmic
Surface anaesthesia
Adult: As 0.4% soln: For tonometry: Instill 1 drop into the conjunctival sac 1 min before measurement. For contact lens fitting: Additional drop 90 sec before fitting. For removal of foreign body or minor surgery: Instill 3 drops at 90 sec interval. For pterygium surgery: Instill 1 drop every min for 10 doses.
Child: Same as adult dose.
Contraindications
Preterm neonate.
Special Precautions
Patient w/ eye infection. Prolonged use. Childn. Pregnancy and lactation.
Adverse Reactions
Significant: Corneal damage, keratitis and tolerance (w/ prolonged use).
GI: Occasional nausea, vomiting, dysphagia.
Ophthalmologic: Transient stinging and burning sensation, blurred vision; stromal infiltration, candida/disciform keratitis, oedema, peripheral corneal formation, epithelial corneal damage (frequent use).
Immunologic: Allergic reactions (e.g. contact allergy, urticaria, angioneurotic oedema).
Patient Counseling Information
This drug may cause transient blurring of vision, if affected, do not drive or operate machinery. Avoid dust and bacterial contamination of anaesthetised eye.
Action
Description: Oxybuprocaine, a para-aminobenzoic acid ester, is a local, surface anaesthesia. It reversibly inhibits the conduction of nerve impulses along nerve axons and the excitability of nociceptors thereby reducing pain sensation.
Onset: Approx 1 min.
Duration: 20-40 min.
Pharmacokinetics:
Absorption: Rapidly and readily absorbed into systemic circulation.
Metabolism: Metabolised by plasma cholinesterases; to a lesser extent, metabolised in the liver mainly to 3-butoxy-4-aminobenzoic acid and other metabolites.
Chemical Structure

Chemical Structure Image
Oxybuprocaine

Source: National Center for Biotechnology Information. PubChem Database. Oxybuprocaine, CID=4633, https://pubchem.ncbi.nlm.nih.gov/compound/Oxybuprocaine (accessed on Jan. 22, 2020)

Storage
Store between 2-8°C. Do not freeze. Protect from light.
MIMS Class
Anaesthetics - Local & General
ATC Classification
S01HA02 - oxybuprocaine ; Belongs to the class of local ophthalmologic anesthetics.
References
Buckingham R (ed). Oxybuprocaine Hydrochloride. Martindale: The Complete Drug Reference [online]. London. Pharmaceutical Press. https://www.medicinescomplete.com. Accessed 12/09/2017.

Joint Formulary Committee. Oxybuprocaine Hydrochloride. British National Formulary [online]. London. BMJ Group and Pharmaceutical Press. https://www.medicinescomplete.com. Accessed 12/09/2017.

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