Nafamivir Eye Drops has the effects of vasoconstriction and anti-allergy, and is mainly used for relieving eye fatigue, itchy eyes and other symptoms. Nafamivir Eye Drops is a compound preparation, the main ingredients are naphazoline hydrochloride, chlorpheniramine maleate, vitamin B12, which is mainly used for relieving eye fatigue, conjunctival congestion and itchy eyes, etc. Among them, naphazoline is an adrenomimetic drug with vasoconstrictor effect, which can relieve eye fatigue and itchy eyes. Among them, naphazoline is a kind of adrenaline drug with vasoconstriction effect, which can relieve the symptoms of ocular congestion; chlorpheniramine maleate is an antihistamine, which can alleviate the symptoms of ocular allergy; vitamin B12 has a certain effect on the maintenance of ocular neurological function. It should be noted that, allergic to the product and closed-angle glaucoma patients are prohibited, pregnant and lactating women should be cautious. In addition, adverse reactions such as pupil dilation, blurred vision, irritation, eye discomfort, dizziness, headache, nausea and cardiac arrhythmia may occur after the use of the drug. The drug should be used under medical supervision and should not be used on its own to avoid adverse effects.