What do you mean 0%?
Let’s be clear: zero is not nothing— it’s everything when it comes to antihistamines. The one with 0% brain interference that's non-drowsy? That’s the one you need to take seriously.1
Picture this: zero brain fog means staying on point during that big meeting, keeping your plans intact, and no more dozing off halfway through the day, all while tackling allergy symptoms.
Sounds like a dream come true for anyone battling allergies, right?
What if we cut brain interference to 0%?
Most antihistamines cross a protective layer of the brain called the blood-brain barrier, making you drowsy. Telfast® is different—watch as it provides fast allergy relief without crossing that barrier, keeping your mind clear and alert. Why choose between relief and alertness? Enjoy both!1,2
Why Telfast®?
All the relief, 0% brain interference, that’s why.
Non-drowsy with 0% Brain Interference
The blood-brain barrier prevents certain things from entering, so your brain cells can keep functioning at their best without any unwanted interference. Our formula respects this boundary, ensuring your brain stays safe and uncompromised.1
Long-lasting
That's right, Telfast® provides up to 24 hours of non-drowsy relief without crossing the blood-brain barrier, so you can enjoy your day to the fullest knowing you’re covered right around the clock! That said, you should still use the old allergy excuse if you don’t want to go somewhere... we won’t tell.5
Fast-acting
Places to be and people to see, we get it, life is full of unmissable experiences. Telfast® works quickly because of its active ingredient, which absorbs fast and targets allergy symptoms without making you drowsy.1-4
The science behind non-drowsy relief since 1996
Telfast®’s story began with a commitment to create allergy relief that is not only effective but also respects mental altertness.
When developing Telfast®, scientists focused on solving a major drawback of other antihistamines: drowsiness. Traditional allergy medications often cross the blood-brain barrier, triggering drowsiness and affecting alertness. The Telfast® team tackled this challenge by designing a unique oral antihistamine that avoids crossing this barrier, delivering fast-acting, non-drowsy relief.1-5
Telfast®’s active ingredient, fexofenadine, was engineered specifically to remain outside the central nervous system.
This innovation allows it to work directly on allergy symptoms without affecting your brain. As a result, Telfast® offers effective symptom relief that keeps you alert and ready to live life fully.
Your allergies don’t stand a chance
Allergy & Congestion Relief
Telfast-D® and Naselfast® delivers fast,non-drowsy allergy relief plus an effective decongestant.
- Ansotegui IJ et al. Curr Med Res Opin. 2024 Aug;40(8):1297-1309.
- Day JH, et al. Ann Allergy Asthma Immunol. 1997; 79: 533–540.
- Van Cauwenberge P et al. Clin Exp Allergy. 2000;30:891–899.
- Howarth PH et al. J Allergy Clin Immunol. 1999;104:927–933.
- Telfast® 180 mg film-coated tablets Last PIL revision date October 2022.