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Helps your immune system react the right way at the right time Helps your immune system react the right way at the right time
Supports healthy digestion and helps your body absorb more nutrients Supports healthy digestion and helps your body absorb more nutrients
Dairy, Lactose, and Casein Free Dairy, Lactose, and Casein Free

Just Thrive® Ultimate IgG

for healthy immune function and enhanced digestion


Just Thrive Ultimate IgG supplies strong immune support with a special focus on your gastrointestinal (GI) system.

Every day, your body is attacked by viruses, infectious bacteria, environmental toxins, and more. These substances – known as antigens – set off your immune system, which tries to get rid of them before they can cause non-disease conditions from bloating and gas to scratchy throats and stuffy heads.

Your immune system responds by sending out antibodies – also known as immunoglobulins – as its front-line soldiers. Your body’s most important and abundant soldier is called Immunoglobulin G, or IgG, and it works very hard to keep you safe from invaders. Sometimes, though, your body needs extra help to fight off the constant attack of antigens… Just Thrive Ultimate IgG can help

In fact, Ultimate IgG supports your immune system in two equally important ways:

  1. It sends in extra immunoglobulin “troops” to keep your body’s antibody soldiers from getting overwhelmed
  2. It tells your immune system to calm down when it overreacts, leading your body to attack itself – an autoimmune response

This is especially important when it comes to gut health. Since more than 70% of your immune system is in your gut, these battles take place there all the time. Without the right support, that can take a huge toll on your GI system, and even cause damage to the protective barrier that lines your gut.

Ultimate IgG helps make sure that doesn’t happen by giving your immune system the tools it needs to respond the right way. No overreacting… no under reacting… just total immune support for you and your gut.


Immunoglobulin G, or IgG, is an antibody – a protective protein that your immune system produces when it senses an invader. IgG antibodies patrol your body for antigens, and spring into action when they run into anything that’s not supposed to be there, such as

  • Viruses
  • Pathogenic bacteria
  • Fungi
  • Environmental toxins
  • Mold toxins

When IgG antibodies catch an invader, they bind to it so it can’t escape. They neutralize the germ or toxin, so it can’t do any damage. Then they safely remove the antigen from your body. Problem solved


Ultimate IgG provides an extra level of protection in your gut. The powerful antibodies target and destroy antigens and keep your gut barrier functioning the way it's supposed to.

Your gut is lined by a protective barrier with two crucial jobs. It selectively sends nutrients and healing compounds into your bloodstream for delivery to your cells and organs to fully nourish your body. At the same time, the gut barrier keeps toxins locked safely inside so they can’t escape into your bloodstream and cause harm.

But bad bacteria and other toxic substances (like pesticide residue on apples, for example) attack the barrier and weaken it. If that happens, toxins can sneak through and can attack anywhere in your body… and take an enormous toll on your health.

That’s when Ultimate IgG comes to the rescue. Ultimate IgG specifically seeks out and neutralizes harmful bacteria that can trigger inflammation, overstimulate the immune system, and damage the intestinal barrier. By taking down those antigens

  • Ultimate IgG supports healthy intestinal function
  • Ultimate IgG keeps your gut barrier strong and solid
  • Ultimate IgG increases nutrient absorption and helps support healthy digestion
  • Ultimate IgG boosts the effectiveness of probiotics

Ultimate IgG and PROBIOTICS: Working Together

Immunoglobulin G works together with probiotics to boost the number of beneficial gut bacteria and strengthen the intestinal barrier. By eliminating harmful antigens, IgG makes it easier for probiotics to survive and thrive in the gut. Plus, IgG and probiotics join forces to support optimal intestinal barrier function.


Just Thrive Ultimate IgG is a dairy-free, lactose-free, casein-free immunoglobulin concentrate.



Ages 2+: Take 4 capsules daily with or without a meal, or as directed by your healthcare professional.

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

Bottom-of-the-Bottle Guarantee

Just Thrive Probiotic - 30 Day Guarantee

Just Thrive is passionate about good health, and we ensure the integrity and quality of our products. That's why we're proud to stand behind every sale with a 100% customer satisfaction "Bottom-of-the-Bottle" Guarantee:

If you're not 100% satisfied with your purchase of any Just Thrive product from, return it to us for a full refund* - even if the bottle is empty!

*Excludes shipping. Applies to a maximum of two bottles purchased directly from Just Thrive.


Customer Reviews

Based on 33 reviews
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Ultimate IgG
Improvements: I love the product but am taking only one/day. Please do not renew any subscription until I request it! Thank you!
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Likes: It brought us powerful healing results.
Improvements: We are awe struck with what you have already done for us!
Ultimate Timing of IgG for my daughter
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