Emedastine Fumarate Eye Drops is not a hormonal drug. Emedastine Fumarate is a histamine H1 receptor antagonist with anti-allergic effects, mainly indicated for the temporary relief of various symptoms of allergic conjunctivitis. The most common side effect is eye pain. Emedastine fumarate eye drops should only be used for eye drops. To prevent contamination of the mouth of the bottle and the medication, do not let the mouth of the bottle touch the eyelids, eye area or other skin, and tighten the mouth of the bottle when not in use. It has also been reported that emmetine fumarate drops can cause corneal infiltration after use, and once corneal infiltration occurs, stop using the medication. If you feel blurred after using the medication, wait until your vision is clear before driving or operating machinery.