Product image of Mydriaticum (Tropicamide) supplied by GNH India

Mydriaticum

Active Ingredient:
Tropicamide
Origin:
EU

Mydriaticum (Tropicamide)

Tropicamide, the active ingredient in Mydriaticum, is an anticholinergic (muscarinic antagonist) presented as an ophthalmic solution for ocular use. It produces rapid pupil dilation and temporary paralysis of the eye’s focusing muscle, facilitating detailed eye examinations and certain diagnostic procedures.

GNH India supplies Mydriaticum as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Laboratoires Thea

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Indications & Clinical Uses

Mydriaticum acts on the muscarinic receptors of the iris and ciliary body to produce pupil dilation and cycloplegia. It is employed in several ophthalmic settings:

  • Ophthalmic examination: provides pupil dilation for better visualization of intra‑ocular structures.
  • Diagnostic procedures: induces cycloplegia to temporarily paralyze accommodation, aiding accurate refraction measurements.
  • Pre‑surgical assessment: facilitates intra‑ocular measurements and laser procedures by maintaining a stable, dilated pupil.

How It Works

  • Tropicamide competitively blocks muscarinic acetylcholine receptors in the iris sphincter and ciliary muscles. By inhibiting parasympathetic stimulation, the iris sphincter relaxes, leading to mydriasis, while the ciliary muscle loses its ability to contract, resulting in cycloplegia. The effect appears within minutes and typically lasts several hours, allowing clinicians to examine the retina and assess refractive status without patient accommodation.

Side Effects

Tropicamide may cause a range of ocular and systemic reactions.

Common Side Effects

  • Blurred vision: temporary loss of visual clarity due to pupil dilation.
  • Photophobia: increased sensitivity to light.
  • Ocular discomfort or stinging upon instillation.
  • Transient rise in intra‑ocular pressure.
  • Mild headache.
  • Conjunctival redness.

Serious or Rare Side Effects

  • Acute angle‑closure glaucoma: sudden, painful increase in intra‑ocular pressure.
  • Severe allergic reaction: swelling, rash, or urticaria.
  • Corneal ulceration or keratitis.
  • Persistent mydriasis lasting beyond the expected duration.
  • Systemic anticholinergic toxicity: dry mouth, tachycardia, confusion.
  • Vision loss if complications are not promptly managed.

Precautions & Warnings

Before using Mydriaticum, consider the following safety measures:

  • Assess intra‑ocular pressure: avoid in patients with narrow‑angle glaucoma.
  • Check for hypersensitivity: discontinue if allergic signs appear.
  • Use with caution in children: pediatric dosing requires specialist oversight.
  • Review concomitant anticholinergic drugs: risk of additive systemic effects.
  • Pregnancy and lactation: prescribe only when benefit outweighs potential risk.
  • Store at ambient temperature: keep in original container, protect from light and moisture.

Avoid Interactions

Tropicamide can interact with several ocular and systemic agents.

Major Interactions (Avoid)

  • Systemic anticholinergics: additive anticholinergic burden may cause systemic toxicity.
  • Adrenergic agents (e.g., phenylephrine): may exacerbate intra‑ocular pressure elevation.
  • Monoamine oxidase inhibitors: potential enhancement of ocular effects.

Moderate Interactions (Monitor Closely)

  • Topical anesthetics: may alter corneal absorption of Tropicamide.
  • Other cycloplegic agents: additive cycloplegia can prolong visual impairment.
  • Beta‑blocker eye drops: possible fluctuations in intra‑ocular pressure requiring monitoring.

Frequently Asked Questions

Mydriaticum is an ophthalmic preparation containing tropicamide, used primarily to dilate the pupil (mydriasis) and temporarily paralyze the eye’s focusing muscle (cycloplegia). These effects facilitate detailed retinal examinations, refraction testing, and certain laser or surgical procedures.

Tropicamide blocks muscarinic acetylcholine receptors in the iris sphincter and ciliary body. By preventing parasympathetic stimulation, the iris sphincter relaxes, causing the pupil to enlarge, while the ciliary muscle cannot contract, leading to loss of accommodation. The result is a clear, dilated view of intra‑ocular structures.

The dosing regimen for Mydriaticum is determined by the prescribing eye‑care professional. Typically, one or two drops are instilled in the affected eye(s) and may be repeated after a short interval, but exact frequency and concentration are set by the clinician based on the specific examination or procedure.

The pregnancy and lactation categories for tropicamide are not definitively established. It should be used only when the potential benefit justifies any possible risk to the fetus or infant, and the decision should be made in consultation with a qualified healthcare provider.

To place an order, submit an enquiry on the Mydriaticum product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies, and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including any cold‑chain needs), and required import documentation.

Compared with phenylephrine, tropicamide produces faster onset of dilation with less cardiovascular stimulation. Against cyclopentolate, tropicamide has a shorter duration of cycloplegia, making it preferable for routine examinations where prolonged accommodation loss is unnecessary. Choice depends on the clinical context and patient tolerance.

Mydriaticum should be stored at ambient temperature, preferably below 25 °C. Keep the vial in its original packaging, protect it from direct light and moisture, and ensure the cap is tightly closed when not in use to maintain sterility and potency.

Mydriaticum is applied topically to the eye. The prescribed number of drops is placed directly onto the conjunctival sac of the target eye(s). Patients should be instructed to avoid touching the tip of the dropper to the eye or surrounding tissues to preserve sterility.

The most serious adverse events include acute angle‑closure glaucoma, which can cause sudden eye pain and vision loss, and severe allergic reactions such as swelling or rash. Persistent mydriasis and systemic anticholinergic toxicity (e.g., confusion, rapid heart rate) also require immediate medical attention.

Mydriaticum is contraindicated in patients with known hypersensitivity to tropicamide or any formulation component, and it should be avoided in individuals with narrow‑angle or acute angle‑closure glaucoma unless specifically directed by an ophthalmologist. Caution is advised for patients taking other anticholinergic medications.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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