Get your first 30 days of FEND for free.
Just pay $5 shipping.

Use the code TRYFEND at checkout to receive one free FEND in your first subscription order. After that, shipping will always be free on recurring subscription orders.

Time to start breathing better.

Subscribe today and keep feeling the benefits of airway hydration.

  • Lasts for approx. 30 days of regular use (3 uses/day).
  • Natural, safe, drug-free, preservative-free, and safe for kids.
  • Great to have in your bag, car, at home, or on-the-go.
  • Adjust, skip, or cancel your subscription at any time, hassle-free.

30-day FEND Trial
$28.99 $00.00
(Just pay $5 shipping)


Learn more about our revolutionary science from FEND founder, Dr. David Edwards.

Dry airways don’t breathe well. Dryness promotes the generation of respiratory droplets, and our airways fail to clean and filter the contaminants we breathe in. To keep us healthy, our airways need to stay hydrated. That's why airway hydration is the missing link to better health.

Using a proprietary mist of perfectly-sized droplets and a precise blend of hydrating salts, FEND delivers hydration exactly where it needs to go — from your nose and sinuses, to the end of your windpipe. This strengthens your upper airways’ natural ability to clean and filter the air you breathe, and keeps dirty air from traveling deep into your lungs or back out into the environment.


What people are saying.

"I am an RN and use my fend at least 2x a day and will continue to recommend it to my colleagues and patients."

-Jeanne M.
FEND customer

"Hydrating the airways daily is the missing link in what we’ve considered till now effective whole-body hydration."

-Dr. Dennis Ausiello
Jackson Distinguished Professor Médecine

Harvard Medical School

"Obsessed. I just put one everywhere I have hand soap or hand sanitizer: Bathrooms, kitchen, desktop, backpack, and my work bag. Gave one to a friend and one to my parents. No longer sneeze when I'm near my daughter's four guinea pigs!"

-Cathy W.
FEND customer


FEND reduces up to 99% of respiratory droplets.


Frequently asked questions.

  What is FEND?

Backed by science, FEND is a new hygiene protocol that cleanses and hydrates the upper respiratory airways to strengthen the body’s natural ability to help keep the lungs cleaner and healthier. FEND uses a proprietary calcium-enriched saline solution delivered in perfectly sized particles that exit the device in a mist that is inhaled through your nose. When inhaled deeply, it hydrates your upper airways capture and eliminate airborne contaminants before they reach your lungs. In addition, FEND helps reduce the number of airborne contaminants you exhale back into the air.

  How is FEND different from a typical nasal spray?

The FEND Mister is not a nasal spray. In fact, it’s not inserted into your nose at all.

Unlike nasal sprays, the FEND System is designed to generate a gentle, safe mist that is inhaled into the upper airways vs. inserted and sprayed into the nose.

Similar to how a humidifier works by creating a mist from water, the mist is created from the proprietary calcium-enriched saline solution. And unlike most nasal sprays, it is drug-free.

The reason we use the FEND Mister device is because the mist particles derived from the solution are smaller than what a nasal spray bottle creates. This enables the solution to stick to the mucus lining in your nose, trachea and main bronchi, which are just at the top of our upper airways. Typically, when we breathe, talk, or cough, the airflow is so strong that it breaks the mucus into little droplets, like wind makes sea mist (at the beach). FEND prevents this break up from happening. FEND rejuvenates the mucosal lining to help it capture and eliminate airborne particles.

  How do I use FEND?

To get started, you'll have to "prime the FEND" (sort of like when you get a new soap dispenser!). Check out this video for a quick how-to. Then, here's another quick video to show how to actually use and hold the new design properly.

A few additional tips and tricks for using your FEND:

1. Squeeze the top and bottom together firmly and hold for a mist. You may feel a small click when you press the FEND together all the way and you’ll notice this ends the mist. This is normal, but if you press it together too fast you won’t get the full mist.

2. You’ll need to hold the FEND upright for it to work. For best results, make sure your FEND is held upright and is tilted downward slightly. If used upside-down, you may need to re-prime the FEND by pumping it a few times to get a mist again.

3. You may experience what we call a “drool” where a bit of liquid builds up near the nozzle. Simply shake out the “drool” to allow the mist to come out.

  How often should I use FEND?

We recommend using FEND every 6 hours, up to 3 times a day. Typically, when you wake up, at some point during the afternoon, and before you go to bed. Regular use of your FEND helps to continually strengthen the mucosal lining, creating a strong filter against small airborne contaminants.

It has also been shown to aid in performance and recovery during periods of activity. FENDing before a workout and a bit after for recovery is also recommended.

Because FEND is literally just salts commonly found in ocean water, there is no risk to "overdose" with FEND and can be used as often as needed.

  How quickly does FEND take effect?

FEND begins to take effect within about 15 seconds of use

  Is FEND safe? Can my child use it?

FEND is a safe, proprietary calcium-enriched saline solution, and is drug-free. Safe for anyone to use, kids included. If you have any concerns, please consult your doctor before regular use by your child.

  Where can I find published peer-reviewed studies on FEND™?

FEND™ was first developed by Dr. David Edwards, our founder, as a response to risks created by anthrax at the request of The United States Department of Homeland Security. In 2020, in response to the global Pandemic crisis, Dr. Edwards and a team of scientists at Harvard and MIT applied that science to create FEND™. The FEND™ system includes a patented Mister device, which uses a proprietary calcium-enriched saline solution.

FEND's effectiveness has been published by peer-reviewed journals and several safety studies conducted before being introduced to consumers. You can find one recently-published in the Molecular Frontiers Journal here: In addition, you can find more studies and articles about FEND™ on our site:

  Will this trial sign me up for a subscription?

By signing up for a free, 30-day trial of FEND, you will be joining our subscription program to ensure you can continue your FEND experience without interruption. After about a month from the trial order, you'll receive a notification from us letting you know an order will be placed soon, at which point you can choose to have it process, skip the order, or cancel your subscription – hassle-free. By subscribing to regular shipments of FEND, you get our best prices possible at 15% off and free shipping on every ongoing order.  

You can adjust your subscription at any time on our website. If you wish to make changes to your subscription and have already created an online account, please visit our website. For additional assistance, please contact our Customer Care team by emailing

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