My 6 Favorite Immune System Supports for Covid and the Flu

As we navigate through the cold and flu season, supporting our immune system is essential to stay healthy and resilient. Below are my favorite immune-supporting supplements that I personally use and recommend to my clients. These tools can help your body fight off infections, reduce inflammation, and support overall well-being. I’ve also included links to where you can purchase each supplement for your convenience.

1. Black Seed Oil

Black Seed Oil, derived from the seeds of the Nigella sativa plant, is a powerhouse when it comes to immune support. It’s packed with antioxidants, particularly thymoquinone, which has been shown to reduce inflammation and support respiratory health. Black Seed Oil also has antibacterial, antiviral, and antifungal properties, making it a versatile tool to help combat both COVID and flu viruses.

Why it’s helpful:

  • Reduces inflammation

  • Supports respiratory health

  • Offers antibacterial, antiviral, and antifungal protection

2. NAC (N-Acetyl Cysteine)

NAC is a precursor to glutathione, one of the most important antioxidants in the body. It helps to reduce oxidative stress, support lung function, and break down mucus in the respiratory tract. Studies have shown that NAC can reduce the severity of respiratory infections and improve recovery times.


Why it’s helpful:

  • Boosts glutathione levels

  • Supports lung health

  • Helps break down mucus in the respiratory tract

3. Vitamin D3/K2

Vitamin D is essential for immune function, and many people are deficient in this critical nutrient. It helps to regulate the immune system and reduce the risk of infections. Combining Vitamin D3 with Vitamin K2 ensures that calcium is directed to the bones where it’s needed, rather than accumulating in the arteries.


Why it’s helpful:

  • Supports immune function

  • Reduces the risk of respiratory infections

  • Promotes calcium balance in the body

4. Smart Silver by DesBio

Smart Silver is a colloidal silver supplement known for its antimicrobial properties. It’s effective against a wide range of pathogens, including bacteria, viruses, and fungi. Unlike traditional antibiotics, Smart Silver doesn’t disrupt the gut microbiome, making it a gentler option for immune support.


Why it’s helpful:

  • Provides broad-spectrum antimicrobial support

  • Gentle on the gut microbiome

  • Supports the body’s natural defense mechanisms

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5. Para 3 by CellCore

Para 3 is a blend of herbs and essential oils designed to target parasites, bacteria, and viruses. While it’s primarily known as a parasite cleanse, it also offers immune-supporting benefits by helping the body clear out hidden infections that can compromise immune function.


Why it’s helpful:

  • Targets parasites, bacteria, and viruses

  • Supports immune system resilience

  • Helps detoxify the body

6. CytoImmune by CellCore

CytoImmune is a cutting-edge immune support supplement from CellCore that helps modulate the immune system and promote healthy cytokine production. It contains a blend of herbs and plant extracts designed to boost immune resilience and support the body’s natural defenses against viruses and pathogens.


Why it’s helpful:

  • Supports healthy cytokine production

  • Enhances immune system resilience

  • Helps the body defend against viruses and pathogens

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Picture of Shannon South, FNTP

Shannon South, FNTP

Shannon South is a Functional Nutritional Therapy Practitioner specializing in fertility and hormones. She gave birth to her one and only child at age 43, after a long struggle with infertility. She and her beautiful family live in Brooklyn, NY.