Building a strong immune system will make you feel more secure.


"One of the most simple things to remember is that our immune system resides in our gut!  70-80% of the functioning action toward invading agents start inside that hollow tube of yours, and therefore the strength and robustness of your gut and microbiome is highly important.  I recommend probiotics as part of an immune boosting strategy in my practice every single day" 

Anjali DSouza, MD

Taking probiotics to support the immune system has been used in many cultures for well over 100 years. The best offense is truly a good defense. We are proud that Dr. Dsouza, in Washington, DC is part of PhtyoQuant-USA’s network of practitioners and that she is regularly recommending probiotics.

Modulation of the immune system may be one of the most important roles that probiotics can play to ensure that the common cold won’t keep you down. Probiotics block pathogenic bacterial effects by producing bactericidal substances that compete with pathogens and toxins for adherence to the intestinal epithelium. (1, 2)

According to the Mayo clinic, taking probiotics regularly may significantly decrease your chances of catching a cold or virus, and reduce the length and severity if you do contract an illness. (3)

A recent study of 326 children between 3 and 5 years old showed that those given probiotic supplements twice a day for six months had fewer fevers, coughing episodes, nasal congestion, and missed days from daycare than their peers. (5) Probiotics coupled with Vitamin C and grapefruit seed extract can be a powerful combination to ensure you make it through cold and flu season unscathed. 

Grapefruit Seed Extract has been proven to be to be effective against more than 800 bacterial and viral strains, 100 strains of fungus, and a large number of single and multi-celled parasites. (6) This extract is known to contain numerous polyphenolic compounds (such as hesperidin and resveratrol) and quaternary ammonium compounds. (7)

Electron microscopy of bacteria treated with grapefruit seed extract revealed disrupted bacterial membranes, which is believed to be the extract's mechanism of action. (7) Many natural health practitioners and patients report grapefruit seed extract's ability to help fight infections when taken orally (8).

Quanta Flore, by PhytoQuant, contains not only the highest quality probiotics, but also prebiotics, food that allows probiotics to flourish, and adding to their overall efficacy.

QuantaEPP, by PhytoQuant, is made using a proprietary ultrasound extraction process, without high heat or alcohol, which preserves the highly beneficial aspects of the grapefruit seeds.

Of course, please don’t forget the basics:

Wash your hands for 20 seconds with soap and then 20 seconds of rinsing. Don’t forget to clean under your nails and the back side of your hands. Here is a link to the CDC’s handwashing guidelines:

Avoid touching your face, as much as possible. That is the most common way we can contract the virus.

For right now, hold yourself back from kissing and hugging friends and relatives. They will understand. Try to keep a distance of 6 feet from people in public places as much as possible, in case they cough or sneeze.


If you have any questions, please reach out to us.

We’re here to help, because we care.

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These statements have not been evaluated by the Food and Drug Administration. The PhytoQuant Products and this article are not intended to diagnose, treat, cure, or prevent any disease. Steiner Lab cannot provide medical advice or guidance. You should seek advice from a medical professional before making any diet or lifestyle changes.

The content and information provided is general in nature and for informational purposes only and does not constitute medical advice; the content and information are not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor or other qualified healthcare provider with any questions you may have regarding a medical condition, procedure, or treatment, whether it is a prescription medication, over-the-counter drug, vitamin, supplement, or herbal alternative.  The content and information provided is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects.