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Sinus Defense

(22 reviews) Write a Review

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Sinus Defense is a breakthrough homeopathic formula created by Dr. Don Dennis, MD FACS, and is designed to enhance immune intelligence for a broad array of molds, allergens, and viruses. Sinus Defense is based on the concept of using immune messenger molecules to "teach" the body how to identify, bind to, and eliminate pathogens, so that it can react faster and more efficiently.   

Sinus Defense’s sublingual delivery method allows rapid absorption into the bloodstream of Transfer Factors, small immune messenger molecules programmed to immediately identify and bind to pathogen-infected cells (mold, bacteria, virus).  Once marked, your immune system easily learns which infected cells to attack and destroy.   

Because Sinus Defense is designed to impart immune-system information directly to your cells, the response to pathogens may be boosted without the heightened inflammation that often results from exposure to mold, environmental toxins, and viruses.    


  • Promotes immune intelligence
  • Boosts & strengthens your immune system
  • Supports cellular resilience and health
  • Helps rid the body of harmful invaders
  • Reduces allergic response to molds and common allergens
  • Reduces sinus inflammation and congestion
  • Safe for use with other Rx medications or supplements

30-day or more supply in each bottle
(depending on dosage and frequency of use)

Note: High-quality homeopathic products contain small amounts of organic alcohol because it helps to hold the potency of the formula stable and enhances absorption. If you are sensitive to alcohol, or if you notice any irritation under your tongue, place the sprays in a small amount (10-20 cc) of warm (not hot!) water for 5-10 minutes. This will evaporate the alcohol before you take it. Swish the entire liquid around in your mouth for 30 seconds before swallowing to allow the ingredients to be absorbed through the mucosa of the mouth.

Learn More About Sinus Defense >



0.27 LBS
Product Size:
Active Ingredients:
Lac Vaccinum 3x, 6x, 30x, 60x, 200x, Silicea 5x
Inactive Ingredients:
Alcohol USP 20%, Purified Water.
Package Type:
Single Product
Directions for Use: Adults: For nasal symptoms apply 3-9 sprays under tongue, 2-3 times daily. Use 9 sprays under tongue, 3 times daily when symptoms increase or additional immune support is needed. For sore throat, open mouth and apply 3-9 sprays directly on sore throat, 2-3 times daily. Adjust number of sprays and applications as needed. For example, if you know you have had a mold exposure, increase dosage or frequency of use. Consult a physician for use in children under 12 years of age. Do not take within 15 minutes of consuming food or brushing teeth. One bottle lasts for 6-8 weeks depending on number of sprays used. NOTE: Sinus Defense does not require physician allergy testing prior to use. It can be used in conjunction with allergy shots or immunotherapy.


When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page.

Returns Policy:

You may return items sold by Micro Balance Health Products with which you are not satisfied within 30 days of the order for a full refund. (Note: See below EC3 Sanitizer Fogger return policy). We will pay the return shipping costs if the return is a result of our error in shipping an item that you did not order. Items should be returned in their original product packaging.

EC3 Sanitizer Fogger Return & Refund Policy: All foggers are protected under a 1-year manufacturer’s limited warranty. This warranty covers mechanical issues and defects. Due to health and safety regulations, all Foggers are a FINAL SALE item.

Please email us about the items you would like to return and we will guide you through the process.

Mailing Address:

Micro Balance Health Products
Attn: Returns
3193 Howell Mill Road, Suite 215Atlanta, GA 30327


Toll-Free: 1-888-404-8958
Fax: 404-352-2798

22 Reviews Hide Reviews Show Reviews

  • Sinus Defense

    Posted by Margie M on Nov 9th 2022

    My husband suffers from constant chronic post-nasal drip. He started using this product about 5 months ago and has seen a dramatic improvement! We purchased the initial kit and tested all the rooms in the house for mold. Some were terrible, others not as bad as we expected. We used the candles, laundry additive and Sinus Defense and he can't say enough good things about your products!

  • Great

    Posted by Unknown on Oct 3rd 2022

    After trying the amazing candles that increase my energy levels every time I lit them I thought I might try sinus defense. I always get sinus infections no matter how much I neti pot…And even if I include antibacterials and antifungal‘s. After using the sinus spray, and even sparingly, I noticed a huge difference in my sinuses and overall well-being. Thank you so much!

  • I try not to run out

    Posted by Sarah on Sep 4th 2022

    This product has been so beneficial, it is something that’s helped not only with mold illness but also when I feel a sickness coming on, I use this 2-3 times a day and start feeling better. When I was at my worst from mold, I carried this in my purse everyday. Now I’m much better but I still try not to run out because I know this product actually works.

  • Unsure

    Posted by Erika on Aug 11th 2022

    Not sure if this is working or not. Have been using it for a week and have been actually feeling exhausted. Not sure if it's the alcohol content, but it certainly tastes like vodka.

    Hi, Erika,
    We will reach out to you directly, but all homeopathic spray formulations are preserved with organic gluten-free alcohol, a natural perservative. This insures against the possibility of genetically modified ingredients (GMO’s) and eliminates any potential allergic responses to wheat. You should not experience any negative side effects. However, should your body react very quickly to a particular remedy, you may feel some signs of slight discomfort. But don’t worry. This is a positive sign that the remedy is working. To minimize the discomfort, simply reduce your number of sprays in half. After 3 to 4 days you can return to your regular dosage.


Sinus Defense


This product is currently on backorder. Please check back as inventory comes in frequently.

Sinus Defense


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