Alcatop Eye Drop is an antihistaminic medication. It is used to treat inflammation of eyes (redness and swelling) caused due to various allergies. It helps in short-term or sudden allergic reactions in the eye. Follow your doctor’s instructions precisely for administering Alcatop Eye Drop in the eye. It should be used regularly at evenly spaced time intervals as prescribed by your doctor. Do not skip any doses and finish the full course of treatment even if you feel better. Stopping the medicine too early may lead to the returning or worsening. Commonly seen side effects seen with this medicine include temporary eye irritation and burning sensation after administration. Consult your doctor if these side effects persist or if your condition worsens. It may cause blurring of your vision for a short time just after its use, so not drive until your vision is clear.