Histamast Eye Drops 5 ml belongs to the 'antihistamine' class of drugs, primarily used to treat signs and symptoms of seasonal allergic conjunctivitis. Histamast Eye Drops 5 ml is also used to treat eye itching or redness caused by pollen, ragweed, grass, animal hair, or dander. Allergic conjunctivitis is an inflammation of the conjunctiva (the clear tissue that covers the white part of the eye and the inside of the eyelids) caused by an allergic reaction.

Histamast Eye Drops 5 ml contains Olopatadine, which inhibits the release of histamine (chemical messengers released due to an allergic response in the body) from mast cells. Thereby relieves itching, burning, redness, and watering in the eyes caused by allergic conjunctivitis.

Your doctor will advise on how often you need to use Histamast Eye Drops 5 ml based on your medical condition. Some common side effects of Histamast Eye Drops 5 ml include eye pain, eye irritation, headache, blurred vision, burning/stinging/redness/dryness of the eye, eyelid swelling, and eye discomfort. These side effects do not require medical attention and gradually resolve over time. If any of the side effects persist or worsen, consult a doctor.

Let your doctor know if you are allergic to Histamast Eye Drops 5 ml or any other medications. Avoid contact of dispensing container with the eye, eyelids, fingers, and other surfaces to prevent contamination. Pregnant and breastfeeding women should consult their doctor before starting Histamast Eye Drops 5 ml. This medicine may cause temporary blurred vision; hence drive only when you are alert and have clear vision. Histamast Eye Drops 5 ml is not recommended for children under three years of age.

Histamast Eye Drops 5 ml contains Olopatadine, an antihistamine drug. It treats signs and symptoms of seasonal allergic conjunctivitis. It relieves itching, burning, redness, and watering in the eyes caused by allergic conjunctivitis. It works by inhibiting the release of histamine (chemical that causes allergic symptoms like itchy eyes) from mast cells. 

• Eye pain
• Eye irritation
• Headache 
• Blurred vision
• Burning/stinging/redness/dryness of the eye 
• Eyelid swelling 
• Eye discomfort 

Inform your doctor if you have any allergic reactions to Olopatadine before starting Histamast Eye Drops 5 ml. Avoid touching the dropper with bare hands or taking it closer to the eyelids while administering drops since it contaminates the solution. If you wear contact lenses, remove them while administering the medicine into the eye. It is advised to check with your doctor before using Histamast Eye Drops 5 ml if you are pregnant or breastfeeding. Avoid driving or operating machines since Histamast Eye Drops 5 ml may cause temporary blurred vision for a while. Histamast Eye Drops 5 ml is not recommended for children below three years.

Drug-Drug Interaction: Histamast Eye Drops 5 ml may interact with antidepressants (bupropion), dementia medicines (donepezil), and drugs that treat excessive sleepiness in narcolepsy (pitolisant).

Drug-Food Interaction: No interactions were found. 

Drug-Disease Interaction: Brief your doctor if you have a medical history of eye infection or injury.

• DIPHENHYDRAMINE
• CETIRIZINE
• ESCITALOPRAM
• ALPRAZOLAM

• Manage stress, eat healthily, drink plenty of water, exercise regularly, and get plenty of sleep.
• Eat food rich in antioxidants such as berries, spinach, kidney beans, dark chocolate, etc.
• Try to maintain good hygiene to keep your eyes clean and irritant-free.
• Avoid staring at the digital screens for longer durations. Rest your eyes every 20 minutes.
• If you wear contact lenses: Clean and replace contact lenses more often. Never share contact lenses. Always remember to wash your hands before inserting and after removing the contact lens. 
• Wash your hands thoroughly and do not touch the dropper before using drops to avoid contamination.
• Know your allergy triggers, such as pollen, dust and other factors.

Allergic conjunctivitis (eye allergy): Allergic conjunctivitis, also known as eye allergy, is the immune response that occurs when the eye comes in contact with an irritating substance known as an allergen. It is of three types: allergic, infective, and acute/chronic conjunctivitis. Allergens include dust, smoke, dander, mold, or pollen. Eye allergy symptoms include itching, burning sensation, watery eyes, red/pink eyes, scaling around the eyes, and swollen or puffy eyelids. It can be passed from one infected person to another; hence precaution like wearing sunglass or distancing is required in public places.