What does allergy medication treat?

Antihistamines and other allergy medicines can ease Sneezing, a Runny Nose, a Blocked Nose, Itchy Eyes, or an Itchy Throat. They may help with symptoms triggered by House Dust Mite Allergy, Pet Allergy, or some Insect Bites and Stings. A medicine can reduce the body's response without removing the trigger, so symptoms may return after exposure.

The best option depends on whether symptoms affect the nose, eyes, skin, or breathing, as well as your age, other medicines, and health conditions. Some products can cause drowsiness or dryness. Follow the label and avoid driving if a medicine makes you sleepy.

Take or apply the medicine as directed, and use a product intended for the symptom area. Reducing exposure can complement treatment: wash bedding regularly for dust-mite symptoms, keep pets away from sleeping areas if advised, and avoid known insect triggers. Do not combine several products with the same active ingredient.

If symptoms keep returning, interfere with sleep, or do not respond, arrange a clinical review. Persistent nasal blockage, wheezing, or repeated reactions may need a different diagnosis or treatment plan.

Call emergency services immediately for swelling of the lips, tongue, or throat; trouble breathing; wheezing; dizziness; fainting; or widespread symptoms that develop quickly after a trigger. Allergy tablets are not a substitute for emergency treatment in a severe reaction. Seek prompt advice for a reaction to a new medicine or an infection around an insect sting.

Which medicine matches my symptoms and trigger? Could it make me drowsy or interact with another medicine? What should I do if breathing symptoms or swelling occur?