What Probiotic 100 Billion Does for Your Gut

Recolonizes Your Microbiome†
One hundred billion CFU provides the therapeutic strength needed to overcome entrenched dysbiosis and restore beneficial bacterial populations after antibiotics, illness, or chronic gut dysfunction.†

Supports Digestive Comfort†
Fourteen clinically studied strains work synergistically to support healthy digestion, reduce bloating and gas, and promote regular, comfortable bowel movements without dependency.†

Strengthens Immune Defense†
Seventy percent of your immune system resides in your gut. This therapeutic-dose probiotic helps maintain the beneficial bacteria that support your body's natural immune response.†

Enhances Nutrient Absorption†
Healthy gut bacteria help break down food and produce essential vitamins, ensuring your body can absorb and utilize the nutrients from your meals and supplements.†

Key Ingredients

Every strain in this formula was specifically selected to work synergistically for optimal gut restoration and immune support.

Why Probiotic 100 Billion Works When Lower-Dose Probiotics Don't

Why Probiotic 100 Billion Works When Lower-Dose Probiotics Don't infographic
90 Day Guarantee

Measurable Results in 90 Days or Your Money Back

Try Probiotic 100 Billion risk-free for ninety days. If you don't experience noticeable improvement in your digestive comfort, bowel regularity, or overall wellness, contact our customer care team for a full refund—no questions asked. This therapeutic-grade formula has helped thousands of customers overcome chronic gut dysfunction and restore their microbiome. Your only risk is continuing to struggle with digestive issues when restoration could be one capsule away.†

Real Reviews, Real Customers

Why I Made This

“When I formulated Probiotic 100 Billion, I chose 14 of the most important strains, and made absolutely sure that there were enough viable CFUs in each capsule to support maximum digestive health and immune function.†”

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Frequently Asked Questions

How do I know which of Dr. Myers’ probiotics are right for me?

We recommend Probiotic 100 Billion to those who are looking for maximum digestive, immune, and gut health support, especially in cases where additional support is warranted. They are perfect for anyone who is just starting The Myers Way®, or any of Dr. Myers’ programs. Our Probiotic 30 Billion is specially designed for those looking for a daily maintenance dose probiotic, or who find that a 100 billion strength probiotic is too strong for them. Are you looking for support targeted to the large intestine and colon microbiome? Considering taking our Primal Earth Probiotic, which is formulated with soil-based organisms.†

Where is the best place to store Probiotic100 Billion?

Probiotic 100 Billion can be stored in any cool, dry place, such as a kitchen cupboard, or a desk drawer. While they do not require refrigeration at all, you may certainly store them in the fridge if you’d prefer to.

What time of the day should I take probiotics? Should I take them with or without food?

Because of the probiotic strains I chose, and the way the capsule delivers the probiotics to your digestive tract, you may take these with or without food, day or night. Try them at different times to see what time of the day works best for you.

Is it safe to give probiotics to children?

We generally recommend our less potent Probiotic 30 Billion for children and teenagers. Because everyone tolerates probiotics differently, we always recommend raising this question with your child’s pediatrician, so that their health history and individual circumstances may be taken into account when forming a decision and before starting supplementation.

How often should I take probiotics?

Take one capsule per day, ideally before a meal to increase the chances of survival of the probiotics through the stomach acid and reaching the gut. However, we recommend you consult with your physician before use to determine what works best for you.

Is it safe to take probiotics when I am on antibiotics?

It is generally safe to take probiotics while on antibiotics, however it's important to speak with your physician first. Antibiotics can disrupt the balance of bacteria in the gut, and probiotics can help replenish the beneficial bacteria. However, certain antibiotics may not be compatible with all probiotics. It's also a good idea to take probiotics a couple of hours before or after taking antibiotics to avoid any irritation and ensure their effectiveness.

†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.

The reviews posted on this site are solely the opinions of our customers and do not represent the views or opinions of AMMD. We do not control, edit, or alter the content of customer-submitted reviews.

4.9
Rated 4.9 out of 5 stars
Based on 731 reviews
Total 5 star reviews: 668 Total 4 star reviews: 42 Total 3 star reviews: 12 Total 2 star reviews: 5 Total 1 star reviews: 4
97%would recommend this product
Reviews Summary
Customers say this supplement helps with digestive comfort and regularity. Many reviews mention noticeable improvements in bloating and gas. Common feedback includes appreciation for the convenient no-refrigeration-needed format. While most report positive experiences with daily use, a few note it wasn't suitable for their needs. Reviews indicate users particularly value this product when taking antibiotics or addressing digestive concerns. Many mention incorporating it into their daily wellness routines, with several noting they can tell a difference when they skip doses.
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731 reviews
  • EW
    Ellen W.
    Verified Buyer
    21 seconds ago
    Rated 5 out of 5 stars
    Ellen

    Took these while on antibiotics and had no problems. Will continue to take them.

    Was this helpful?
  • CH
    Cynthia H.
    Verified Buyer
    1 week ago
    Rated 5 out of 5 stars
    Life changing!

    Along with the other products I have ordered, my stomach issues have practically dissipated! I have no more diarrhea, after every meal. I am so grateful to Dr. Amy for sharing her vitamin programs , they have changed my life. I was also diagnosed with Graves’ disease. I followed her vitamin protocol & my doctor was amazed that I have no more symptoms & they released me. These supplements & protocols are seriously life changing!

    Was this helpful?
  • KC
    Karen C. M.
    Verified Buyer
    2 weeks ago
    Rated 5 out of 5 stars
    Great Probiotic

    The prior probiotics I was using was out of stock, so decided to give the a try. It was the best decision I've made. I felt the difference almost immediately and it has not changed over the 2 months I have been using them. Thank you for making such a good product.

    Was this helpful?
  • EC
    Elizabeth C.
    Verified Buyer
    1 month ago
    Rated 1 out of 5 stars
    Probiotic Caps

    I am not unhappy with the supplement. But something is wrong with the subscription dates. I have not had the time to research but I am getting them too soon. Thanks

    Was this helpful?
    AM Profile picture for Amy Myers MD
    Amy Myers MD
    1 month ago

    Hi Elizabeth,

    Please look for our direct email to you.

  • LS
    LISA S.
    Verified Buyer
    1 month ago
    Rated 4 out of 5 stars
    Good stuff

    I’ve tried many different probiotics that don’t seem to make much difference but this brand is different. Very clean product that has so many good properties to give our gut a nice healthy advantage.

    Was this helpful?

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