In this page you will find information about

Signs and symptoms of indoor allergies
Here’s where most indoor allergens hide
Types of indoor allergy triggers
Telfast® is here to help fight indoor allergies
A couple extra tips to minimize indoor allergens

Signs and symptoms of indoor allergies

An allergic reaction is the result of your immune system going on the defensive. When it detects an allergen, it produces antibodies called Immunoglobulin E (IgE). In response, your cells release chemicals to fight the allergens, which result in your allergy symptoms.1

The most typical symptoms of indoor allergies include:1

  Runny nose and post-nasal drip*
  Itchy, red, and/or watery eyes*
  General congestion or sinus pressure
  Hives, rash, or other types of skin irritation*

Here’s where most indoor allergens hide:3

  Damp and humid areas
  Indoor plants
  Pillows and bedding
  Plush furniture
  Plush toys
  Unsealed mattresses
  Wall-to-wall carpet

The most common indoor allergy triggers — and what to do about them

Dust mites

More than 95% of the allergens associated with mites are inhaled. Mite-contaminated food can also be a source of allergic reactions.2

How to control dust mites:3

  Keep surfaces clean and uncluttered

  Avoid wall-to-wall carpet — use low-pile carpets, washable rugs, hardwood, linoleum, or tile

  Avoid heavy drapes

  Avoid overstuffed furniture

  Use sealed, allergen-resistant covers on your pillows and mattress

  Wash bedding, pillows, and stuffed toys in water that’s at least 55°C; dry them in a hot dryer

Indoor mold

The common indoor mold and mildew that cause allergies thrive in dampness. You’ll find them in moist basements, bathrooms, or anywhere with leaks. Mold can cause a variety of allergic reactions, from minor irritation to severe asthma.*,1

How to reduce mold1,3

  Reduce moisture in the bathroom, kitchen, and basement

  Don’t run showers too long before hopping in

  Use dehumidifiers

  Limit the number of house plants, and ensure proper drainage

  Fix leaks quickly

  Remove mold from hard surfaces with water and detergent or, if necessary, 5% bleach; let them dry completely

Pet dander

There are no breeds of dogs or cats that are 100% allergen-free — not even the hairless ones. That’s because you don’t react to fur, but to allergens in saliva, dander (skin flakes), or urine.1

How to manage pet dander3

  Avoid direct contact with pets

  Keep pets out of your bedroom

  Wash and change pet beds and toys often

  Bathe and brush your pets often — and wear a mask when you groom them

  Wash your hands after handling pets

  Frequently wipe and vacuum spaces where your pets spend time

  Before getting a pet, ask your allergist to determine if you are allergic to animals


The World Health Organization identifies 12 distinct allergens carried by cockroaches.2

How to control cockroaches1,3

  Cover food, garbage, and recyclables; take the trash out quickly

  Use poison baits, boric acid, and traps instead of chemicals, which may irritate your sinuses and/or asthma

  Block crevices, wall cracks, and windows where they enter

  Fix and seal leaks

  Keep food in lidded containers

  Put away used pet bowls and uneaten food

  Vacuum and sweep after meals

  Wash dishes immediately after use

  Clean under stoves, refrigerators, or toasters where crumbs can accumulate

  Wipe off the stove, cupboards, and other kitchen surfaces regularly

A couple extra tips to minimize indoor allergens

It’s nearly impossible to completely avoid indoor allergens. But there are ways to reduce them.

 Keep the air as clean as possible3

  • Increase the flow of outdoor air
  • Reduce humidity
  • Use air cleaners with certified allergy and asthma filters
  • Vacuum frequently with certified allergy and asthma filters


 Wear a mask while doing housework3

  • Leave the house for several hours after cleaning it.


Man confidently holding his cat and smiling

Telfast® is here to help fight indoor allergies

Telfast® helps you live your best life by relieving many common indoor allergy symptoms. If you experience sneezing, runny nose, itchy, watery eyes or an itchy nose or throat, Telfast® can help.4 And if you also have nasal congestion, sinus congestion and pressure, or swelling of nasal passages, check out Telfast-D®.5 Now you can feel more at home — at home.

No matter which product you choose, you can feel good knowing Telfast® is the #1 allergist-recommended medicine brand for non-drowsy relief.*

Find the Telfast® product that’s right for you.

    1. Andrew Moore, MD, reviewed. Indoor Allergens, American Academy of Allergy, Asthma & Immunology [], February 28, 2020. Reviewed on May 20, 2021.

    2. Anna Pomés, Martin D. Chapman, Sabrina Wünschmann. Indoor Allergens and Allergic Respiratory Disease, PMC/US National Library of Medicine, National Institutes of Health, June 2016. Reviewed on Oct. 5, 2021.

    3. Asthma and Allergy Foundation of America, Ed. Control Allergens to Improve Indoor Air Quality, Reviewed by Medical Scientific Council, 2015. Reviewed on Oct. 5, 2021.

    4. Telfast Gulf PIL – last revised November 2020

    5. Telfast-D Gulf PIL, last revised July 2021

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*Among oral antihistamines.