Flu, RSV, Covid Protocols from the FLCCC
Discover the FLCCC Protocols and Top Immune-Boosting Supplements
Heidi Petrusaitis, BSN RN
5/9/20253 min read
FLCCC Protocols and Our Favorite Immune Support Supplements
When it comes to supporting your immune system—especially during viral seasons—there’s a lot of noise out there. One of the most trusted, research-backed guides is the FLCCC (Front Line COVID-19 Critical Care) Alliance, which has developed protocols focused on prevention, early treatment, and long-haul recovery. You can view the most updated FLCCC protocols here.
If you're looking for practical ways to support your family's immune system—especially in alignment with the FLCCC protocols—this blog is for you. Below you'll find links to the FLCCC protocols and a list of some of our favorite supplements that align with their recommendations. Many of these are combination formulas, which makes supplementation both convenient and more cost-effective as you are getting multiple nutrients, vitamins or herbs all combined into one supplement.
Click here to view the FLCCC Protocols
They have treatment protocols for the flu, RSV, covid, vaccine injuries, cancer, insulin resistance, brain health and more!
Pro tip: print the protocols out and tape them inside your cabinet. So when someone starts getting sick you know exactly what to reach for! That is what we do and it makes it a life saver because it takes the thinking and guess work out of it when your sick. Just open your cabinet and follow the protocol.
Our Favorite Immune-Supporting Supplements
Orthomolecular Products (Save 20% through Fullscript)
Virakid: Immune-supporting blend for kids including vitamins A, C, zinc, elderberry, and astragalus.
Viracid: Fast-acting immune formula with vitamin A, C, zinc, astragalus, elderberry, echinacea, L-lysine & more.
D-Hist Junior: Supports seasonal immune challenges for kids with quercetin, stinging nettles, NAC, bromelain, and vitamin C.
D-Hist (Adults): Same formulation as D-Hist Junior but in adult-strength doses.
Integrative Therapeutics (Save 20% through Fullscript)
EHB: Combines immune-supportive vitamins (A, C, B6, zinc) with potent herbs including echinacea, garlic, bromelain, Oregon grape root, goldenseal, licorice root, and garlic extract.
NAC (N-Acetyl Cysteine): A precursor to glutathione, supports respiratory health and detoxification. NAC is super helpful at thinning secretions in your respiratory tract to help you cough it up easier or blow out your nose easier.
Apex Energetics (Save 20% through Fullscript)
X-Viromin: Includes vitamins A, C, zinc, plus herbal support like astragalus, licorice, lemon balm, and pomegranate. Also contains immune system glandulars (thymus, parotid, spleen) and maitake mushroom.
Dr. Green Mom (Save 10% with code holisticheidi10)
Essential Immune Support (Kids & Adults): It comes in both a kids version and adults version. Convenient blends with ingredients like vitamins A, C, D, K, zinc, selenium, glutathione and turmeric to support overall immune function.
Immune Mist (Save 10% with code holisticheidi)
Immune Mist: helps remove inhaled foreign particles, viruses, germs and stagnant mucus from your nasal and oral cavities. This is also called nasopharyngeal cleansing, a practice continuing to be highlighted in importance by the world’s leading experts in preventative care.
Elderberry (Save 20% through Fullscript)
Wise Women Herbs Elderberry is my favorite brand and it's available on Fullscript. Elderberry is rich in antioxidants and supportive compounds. Available in syrups or tinctures for adults and children.
Vitamin C
Dr. Mercola Liposomal Capsules (20% off through Fullscript): High-absorption form of vitamin C.
BeeKeepers Naturals Liposomal Vitamin C (20% off through Fullscript): Tastes great and easy to take; save 20% via Fullscript.
Cymbiotika Liposomal Packets: Great-tasting packets with added bioflavonoids and antioxidant support (save 15% through my link).
Nutribiotic Vitamin C Powder: A favorite of Dr. Suzanne Humphries—especially for pertussis cases. Highly customizable dosing.
Final Thoughts
These supplements are our go-to choices for supporting the immune system during cold and flu season, travel, or exposure to illness—especially when I'm trying to follow some of the FLCCC protocols.
Remember friend, if you have questions ask your favorite healthcare provider if you are trying to decide if something is right for you.
Affiliate Disclosure: This post contains affiliate links. I may earn a small commission if you purchase through my links, at no extra cost to you. I'm only sharing the products we use, love and trust in hopes they help you!

