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Product Overview

OnGuard Immune Defense is built for the immune system you rely on every day — the one working in the background while you commute, travel, and move through crowded rooms. Each capsule pairs colostrum, the antibody-rich first milk from US Grade A dairy cows, with MycoFusion, a patented complex of MaitakeGold 404 and shiitake mushrooms rich in beta-glucans that help your immune cells stay ready.*

The formula is rounded out with two ingredients prized in traditional wellness practice: Lo Han, the Chinese melon used for centuries to support good health, and sacred lotus seed extract, a longevity botanical that delivers protective antioxidants. Together they give the formula a wider footprint than a single-ingredient immune supplement.*

OnGuard is designed for steady, year-round use. Take one capsule in the morning and one in the evening as part of your daily routine — a quiet two-capsule habit that keeps your immune system covered through travel, seasonal change, and the ordinary stress of a full schedule.*

  • Supports everyday immune system function*
  • Patented MycoFusion mushroom complex with immune-active beta-glucans*
  • Colostrum delivers naturally occurring immune factors*
  • Designed for steady daily use — AM and PM
  • Lo Han and sacred lotus seed for traditional wellness support*

How to use

  • Take one capsule in the morning with water.
  • Take a second capsule in the evening with water.
  • Use daily as part of a steady routine.

Contains milk (from colostrum) and mushrooms — do not use if allergic to either. If you are taking blood thinners or other anticoagulant medication, talk with your physician before use; mushroom extracts may affect coagulation. Always follow the product label. Consult your healthcare professional if pregnant, nursing, taking medication, or managing a medical condition. Keep out of reach of children.

OnGuard Immune Defense Supplement Facts panel — Proprietary Blend 516 mg with colostrum, MycoFusion mushroom complex, Lo Han, and sacred lotus seed

Serving size: 1 capsule · 120 servings per container

  • Colostrum. First milk from US Grade A pasteurized dairy cows. Naturally rich in immunoglobulins and other immune factors that newborn calves rely on in their first days of life.*
  • MycoFusion Mushroom Complex. Patented blend of MaitakeGold 404 (Grifola frondosa) and shiitake (Lentinula edodes) on brown-rice biomass. The maitake fraction (US Patent #5,854,404) is rich in beta-glucans associated with immune-cell activation.*
  • Lo Han (Momordica grosvenorii fruit). Sweet Chinese melon used for centuries in traditional wellness practice to support overall good health and longevity.*
  • Sacred Lotus Seed Complex. Patented extract from one of the longest-living seeds known to botany. Supplies protective nutrients and antioxidants studied for their role in healthy aging.*
  • Other ingredients. Gelatin (capsule), magnesium stearate, silicon dioxide. The Supplement Facts panel is the source of truth on the full list and exact amounts.
  • Do not exceed the recommended dose. Always follow the directions on the product label.
  • If you are pregnant, nursing, taking medication, or managing a medical condition, consult your healthcare professional before use.
  • Keep out of reach of children.
  • Store in a cool, dry place away from direct sunlight. Do not use if the safety seal is broken or missing.
  • Discontinue use and consult a healthcare professional if any adverse reaction occurs.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

From customers

What people say.

5.0
★★★★★
31 verified reviews
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★★★★★Amazon

Best product to support the inmunoterapia.

CARLOS A. · Verified buyer
★★★★★MDR.com

We have a friend who is 85 years old and has gone through several bouts of cancer and his immune system, as you can imagine is very sensitive and not as strong as he would like it to be. He has a Caregiver and she ended up giving him a cold. He was very upset! We ran over a bottle of OnGuard to him right away, because he had just gotten the cold the day before we spoke with him. We gave him instruction to take 4 capsules (1 every couple of hours) to get it into his system on the first day and the next day, when we called to ask how he was, he siad the following: " I want to thank you so much!!! I feel 1 million times better. I believe I actually don't have the cold anymore and then we instructed him to keep taking 2 per day. He was so excited that he told us, he had already ordered another bottle. Seriously!!! This was the best news of the day for us, that On Guard Immune Defense helped this precious man who had a weakened immune system, stay sttong and healthy that day and from this moment forward!

Sheryl
★★★★★MDR.com

The best defense. Started taking it at the beginning of Covid. Haven’t getting sick. Period

Wendy P.