Neored Kapljice Za Oko (Tetryzoline Hydrochloride)

• Tetryzoline Hydrochloride is an ocular decongestant that reduces redness and irritation by constricting conjunctival blood vessels.
• Red eye: diminishes visible redness by vasoconstriction, improving cosmetic appearance and patient comfort in conditions such as minor conjunctivitis.
• Ocular congestion: lessens engorged conjunctival vessels, relieving a feeling of fullness and discomfort associated with allergic or irritant exposure.
• Eye irritation: alleviates mild burning or stinging sensations caused by environmental factors, wind, or contact lens wear, providing rapid symptomatic relief.

• Tetryzoline Hydrochloride acts as a selective alpha‑adrenergic receptor agonist on the smooth muscle of conjunctival vessels. Activation of α1‑adrenergic receptors induces vasoconstriction, decreasing blood flow to the ocular surface. The reduced vascular dilation leads to a rapid decline in redness and congestion, providing symptomatic relief without affecting intraocular pressure. Its localized ocular application limits systemic absorption, focusing the effect on the eye.

Common and rare adverse reactions may occur with ocular use of tetryzoline hydrochloride eye drops.

Common Side Effects

• Eye stinging or burning: transient sensation that usually resolves within minutes.
• Temporary blurred vision: mild visual disturbance that clears shortly after application.
• Mild itching of the eye: occasional pruritus that subsides with continued use.
• Slight headache: brief headache that may occur after instillation.

Serious or Rare Side Effects

• Severe allergic reaction (anaphylaxis): rapid onset of swelling, rash, and breathing difficulty requiring immediate medical attention.
• Significant increase in intraocular pressure: may precipitate glaucoma in susceptible individuals; monitor pressure if symptoms arise.
• Corneal ulceration: rare breakdown of corneal tissue leading to pain and visual impairment.
• Persistent eye pain or vision loss: ongoing discomfort or loss of sight warrants urgent evaluation.
• Systemic hypertension: elevated blood pressure due to systemic absorption of the vasoconstrictor.

• Before using Neored Kapljice Za Oko, consider the following precautions to ensure safe and effective treatment.
• Pregnancy: consult a healthcare professional before use, as safety data are limited.
• Breastfeeding: discuss potential risks with a physician, as the drug may be excreted in milk.
• Contact lens wearers: remove lenses before instillation and wait before reinserting.
• Pre‑existing eye conditions: avoid use if you have narrow‑angle glaucoma or severe ocular disease.
• Concomitant ocular medications: separate administration times by at least five minutes.
• Store at below 25°C: keep in the original container, protect from light and moisture.

Tetryzoline hydrochloride may interact with other ophthalmic agents or systemic drugs.

Major Interactions (Avoid)

• Monoamine oxidase inhibitors (MAOIs): risk of hypertensive crisis when combined with systemic alpha‑agonists.
• Other ocular vasoconstrictors: additive vasoconstriction may increase intraocular pressure.
• Non‑steroidal anti‑inflammatory eye drops: potential for reduced efficacy.

Moderate Interactions (Monitor Closely)

• Beta‑blocker eye drops: monitor intraocular pressure.
• Systemic antihypertensives: observe for additive blood‑pressure effects.
• Topical anesthetics: may enhance local irritation.