Like any medication, these Moxifloxacin drops also have some undesirable side effects. However, these side effects are not experienced why everyone who uses these drops. Seek help from a health professional if you notice any signs of an allergic reaction. Some side effects include: Dry eyes, Irritation in the eyes, Itchiness in the eyes, Mild and temporary burning and stinging sensation after applying the medication, Nausea, Eye pain, Sensitivity to light, Disorders of the area around the corneas, Spots on the cornea, Swelling of cornea, Symptoms of new eye infections, Allergic reaction, Abdominal cramps, Difficulty in breathing, Vomiting, Swelling of face and throat The list mentioned above does not contain all of the possible side effects that an individual can experience.