Altadine Eye Drop belongs to a class of antihistamine, and it is primarily used to treat itching/irritation of the eyes due to allergic conjunctivitis. Allergic conjunctivitis is a quite common eye inflammation caused by an allergic reaction from allergens, especially during hay fever season. Its body’s reaction against substances it considers as potentially harmful.

Altadine Eye Drop contains Alcaftadine. It works by blocking the release of histamine, which is responsible for allergic symptoms. Altadine Eye Drop comes in ophthalmic dosage form (eye drops).

Altadine Eye Drop is for external use only. If you wear contact lenses, remove it before using Altadine Eye Drop, and you can put it back 10 minutes after using Altadine Eye Drop. You may experience irritation in the eyes, headache, mild taste, swelling of the inside of the nose and throat in some cases. Most of these side effects of Altadine Eye Drop are temporary, do not require medical attention, and gradually resolve over time. However, if the side effects are persistent, reach out to your doctor.

Take Altadine Eye Drop only if the doctor prescribes you. Never encourage self-medication or suggest your medicine to someone else. Also, do not use Altadine Eye Drop to treat irritation of the contact lens. It would be best to stop taking Altadine Eye Drop abruptly as it may worsen your symptoms. Do not take Altadine Eye Drop if you are allergic to Altadine Eye Drop or any ingredient of Altadine Eye Drop. Do not take any other eye medication along with Altadine Eye Drop without talking to your doctor. Before using Altadine Eye Drop, inform your doctor if you have or ever had glaucoma (increased eye pressure), any other eye problem, or if you are pregnant or breastfeeding.

Altadine Eye Drop contains Alcaftadine, and it is an H1 histamine receptor antagonist. It is used to treat itching of the eyes due to allergies. It works by inhibiting the natural substance (histamine) action that is responsible for causing allergic symptoms. Due to the release of histamine, symptoms such as itching of the eyes can be seen.

• Eye irritation
• Itching, burning, or stinging of the eye
• Eye redness
• Runny nose
• Headache

Inform your doctor if you are allergic to Altadine Eye Drop or any of the ingredients of Altadine Eye Drop, what other prescription and non-prescription medications, vitamins, nutritional supplements, and herbal products you are taking. Please do not stop taking Altadine Eye Drop suddenly, as it might worsen your symptoms. Do not swallow this medication as it may cause harm if swallowed, Altadine Eye Drop is intended for use in the eye only. Wash your hands before and after instilling Altadine Eye Drop. To avoid any contamination, avoid touching the tip of the dropper. Do not put to eye medication simultaneously; wait for at least 5-10 minutes before putting in the second medication. If you develop/notice a new eye infection or injury, inform your doctor, change in eyesight, or awful (very bad) eye irritation after using Altadine Eye Drop.

Drug-Drug Interaction: Altadine Eye Drop may interact with other ophthalmic medications. Please check with an ophthalmologist.

Drug-Food Interaction:  No interaction established/found.

Drug-Disease Interaction: No interaction established/found.

• Avoid alcoholic beverages with Altadine Eye Drop as they can make you dehydrated and affect eye's pressure.
• Visit an optician regularly.
• Try to include heart-healthy omega-3 fatty acid-containing food drinks in your daily diet. You can also use low-fat cooking oil like olive oil, soybean oil, canola oil, and coconut oil.
• Regular moderate exercise and appropriate rest are important for a speedy recovery.
• Fruits and vegetables, which contain vitamins A and C, help improve vision.
• Include dairy foods in your diet that may improve eye health.
• Indulge yourself in aerobic exercise that relaxes eye muscles and the pressure built inside them.
• Consume more leafy vegetables, including cabbage, kale, and spinach, that improves eye health and lowers the risk of glaucoma.

• Remove your contact lenses before using Altadine Eye Drop to avoid any unpleasant side effects. 
• Do not put two eye drops together. Try to maintain a gap of at least 5-10 minutes between the two eye drops. 

Allergic conjunctivitis: Allergic conjunctivitis is a quite common eye inflammation that happens when your eyes come into contact with an allergen. Symptoms such as itching, redness of the eyes can occur because the overreacting immune system causes the body to release histamine and other active substances. As a result, the blood vessels dilate or expand, irritates the nerve endings. Allergic conjunctivitis is different from infective conjunctivitis.