Tropicamide & Phenylephrine Hydrochloride: Uses,Dosage,Side Effects

Generic Name
Tropicamide & Phenylephrine Hydrochloride
Therapeutic Class:
Ophthalmic

Indications:
Tropicamide and Phenylephrine Hydrochloride can be used both for diagnostic and therapeutic purpose:
  • Therapeutic purpose: Inflammatory conditions of the uveal tract
  • Diagnostic purpose: Retinal photography, Refractive errors, Funduscopy, Slit-lamp examination
  • Pre-operative use: In order to undergo a surgical procedure that requires the visualization of structures behind the iris, such as cataract extraction, vitrectomy, and retinal detachment surgery, the pupil must be adequately dilated before surgery.
Presentation:
Each ml contains Tropicamide BP 8 mg and Phenylephrine Hydrochloride BP 50 mg.

Description:
Tropicamide and Phenylephrine Hydrochloride sterile eye drops are a combination of Tropicamide and Phenylephrine Hydrochloride. Tropicamide is an anticholinergic agent which paralyses the sphincter muscle of the iris resulting in pupillary dilatation. The ciliary muscle is also paralyzed leading to loss of accommodation.

Phenylephrine Hydrochloride is an alpha-receptor sympathetic agonist used in local ocular disorders because of its vasoconstrictor and mydriatic action without cycloplegia.

Dosage & Administration:
Therapeutic purpose:
Uveitis: 1-2 drops bid-qid or as required.

Diagnostic purpose/Pre-operative purpose: Instill 1-2 drops in the eye(s) 15-20 minutes before examination. If the examination is not conducted within 20–30 minutes, an additional drop may be placed in the eye(s) to prolong the effect.

Side Effects:
Elevated IOP (occasionally), stinging, blurred vision, tachycardia, photophobia, headache, parasympathetic stimulation, and allergic reactions. Systemic effects include arrhythmias, hypertension, and coronary artery spasm.

Precautions:
Caution should be taken when administered with, or up to 21days after administration of monoamine oxidase (MAO) inhibitors as exaggerated adrenergic effects may result.

The possibility of psychotic reactions and behavioral disturbances should be considered in patients who are hypersensitive to anticholinergic drugs.
Use with extreme caution in infants.

Use in Pregnancy & Lactation:
The safety of this medication during pregnancy or lactation has not been established.

Interaction:
Tropicamide may interfere with the antihypertensive action of carbachol, pilocarpine, or ophthalmic cholinesterase inhibitors.

Overdose:
Excessive use in children and in certain susceptible individuals may produce systemic toxic symptoms.

Storage:
Keep out of the reach of children. Store in a cool, dry place, away from heat and direct light. Do not use it more than 4 weeks after opening.

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