What is a Soil-based Probiotic & How Do I Know If I Need One?
If you haven't experienced good results with other probiotics or are dealing with SIBO, you may want to try a soil-based probiotic. Primal Earth is designed to survive the digestion process and populate your GI tract where it matters most — your colon — so you can feel your best.
A Super Strength SBO Probiotic
My Primal Earth Probiotic is only available through my store. This is because it’s prescription strength. This probiotic isn’t like your run-of-the-mill health-food store variety. My Primal Earth Probiotic contains three different strains of live, inherently viable symbiotic microorganisms. These soil-based super probiotics have a seed-like structure that protects them from heat, oxygen, and even passage through the stomach and small intestine.
Primal Earth Probiotic: Survives Digestion Intact!
The probiotics in Primal Earth Probiotic reach your large intestine and colon intact, where they can colonize and proliferate, supporting optimal health and vitality. Because the viable microorganisms in Primal Earth Probiotic are protected from heat and stomach acid, they are able to travel undaunted through the digestive tract to their destination, the large intestine, and colon.
Many Lactic Acid Based Probiotics Simply Don’t Work
Many lactic acid based probiotics available on the market simply don’t work... Unless the manufacturer of a lactic acid-based probiotic goes to great lengths to protect their probiotic formula from stomach acid, heat, oxygen, and light, odds are that the CFU count you see on their label is woefully inaccurate. Many of these manufacturers either don’t understand the need for this or don’t want to spend the money to do it. Unfortunately, this results in many mass-market probiotic supplements simply not able to do what they advertise.
Standard Probiotics Can Make SIBO Worse
If you can believe it, there are certain situations where standard lactic acid based probiotics can actually cause more complications than they solve. SIBO, or Small Intestine Bacterial Overgrowth, is one of those situations. Because SIBO is an overgrowth of bacteria in the small bowel often caused by chronic constipation or challenges with the nervous system, adding more lactic acid based bacteria into the small intestine can often be adding more fuel to the fire. This is a situation where a soil based probiotic can really shine. They don’t populate in the small intestine and lend themselves to bacterial overgrowth there, instead heading to the large intestine and colon where they can support vibrant health.
Primal Earth Probiotic is the Ultimate SBO Probiotic
I custom formulated my Primal Earth Probiotic to perfectly mimic the key probiotics available in our paleolithic ancestors’ diets. Our Paleo ancestors got much of their beneficial probiotic microorganisms from their environment and their food. When they picked a root vegetable from the organic, pristine earth, the humic rich soil was teeming with microorganisms, many that we exist symbiotically with. In today’s washed and sterile society where we are twice removed from the source of our food, many of us do not have the opportunity to be exposed to these types of probiotics. I believe this is almost certainly a piece of the puzzle with regard to why digestive issues are so much more common today than they once were.
Who Should Take Primal Earth Probiotic?
Primal Earth Probiotic is an excellent choice for those who:
- Are not experiencing success with traditional lactic acid based probiotics
- Have taken a course of antibiotics
- Are looking to tackle tough digestive issues
- Travel frequently and want to take their probiotics with them
- Have a history of high stomach acid
- Do not want to keep their probiotics in the refrigerator
Suggested Use: Take 1 capsule per day with a meal. Consult your physician before use.
Contents: 30 Capsules
Warning: Keep out of reach of children. Store away from heat and moisture.
DOES NOT CONTAIN: Gluten, Wheat, Dairy, Corn, Soy, GMOs, or Yeast.
FAQs
Why don’t I have to refrigerate Dr. Myers’ Primal Earth Probiotic?
My Primal Earth Probiotic is made with soil based probiotic organisms that naturally have a seed or spore-like protective coating. Because of this inherent protection, they are protected from heat, light, and oxygen, and therefore may be stored in a kitchen cupboard, desk drawer, or even traveled with.
How do I know if I should take Primal Earth Probiotics or one of your other probiotics?
I generally recommend my Primal Earth Probiotic formula to those who have tried other lactic acid based probiotics and had no improvement in digestive health, or relief from chronic complaints. Another reason to choose my Primal Earth Probiotic over my 30 Billion Probiotic, or my 100 Billion Probiotic is if you travel frequently and want to take your probiotic with you. My Primal Earth Probiotic stands up to the rigors of travel very well.
When should I take Primal Earth Probiotic?
Because of its viability and how resilient it is, My Primal Earth Probiotics can be taken at any time of the day, with or without food. Many find they feel best when they take it right before bed, and many others report it working best for them when taken with breakfast, lunch, or dinner. I recommend trying it at different times of the day and finding out what works best for you.
Is it safe to give Primal Earth Probiotic to children?
I generally recommend my less potent 30 Billion Probiotic Capsules for children and teenagers. Because everyone tolerates probiotics differently, I 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.
† 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.
Why Buy from Amy Myers MD?
Finally, supplements from a source you can actually trust. After receiving my medical degree (M.D.) at Louisiana State University, I completed my residency in Emergency Medicine at the University of Maryland Medical Center. In 2012, I became a certified functional medicine physician, so I could help my patients get to the root cause of their health problems.
Since then, I’ve gone on to write 2 New York Times bestselling books, as well as the Amazon #1 bestseller The Autoimmune Solution Cookbook. I’ve been a guest on the Dr. Oz Show 7 times, have starred in my own PBS special, and been featured in dozens of television, radio, and magazine interviews.
Many other supplement brands are run by fly-by-night operations looking to turn a quick buck. Not so with Amy Myers MD® — it’s one of the only health and wellness brands owned and operated by a real medical doctor (that’s me)!
You’ll know exactly what you’re getting because all products are 3rd party tested and verified. You may be surprised to know that the supplement industry is not regulated by the FDA and it’s up to the manufacturer to ensure they’re delivering high-quality products that contain what they say they do.
All of the supplements I carry in my store carry the Good Manufacturing Practices (GMP) seal, meaning they have been 3rd party tested for purity, quality, potency, and composition, so you can rest assured that you’re getting the key nutrients you’re paying for and that your body needs.
High-potency, pharmaceutical grade supplements to maximize value and impact.
Because I am a licensed physician, the supplements I carry are pharmaceutical grade, meaning they are higher quality and typically higher dosages than you can find in a health food store or online retailer.
This is vital because cost per unit is a key metric to look at when choosing supplements. If you look at a supplement such as my 100 Billion probiotic, you will find that you may need to take nearly an entire bottle of other probiotics to achieve the same potency.
My supplements contain no gluten, dairy, soy, GMOs, preservatives, dyes, or toxic ingredients. You’re not eating these inflammatory foods or toxins so why would you want them in your supplements?! I source all of the ingredients in my supplements from pure, clean sources.
There are a few incredibly rare exceptions where products contain trace amounts of dairy or egg because of the way they need to be formulated, however they are clearly marked on the product page and are in such low quantities that even my very sensitive patients typically have not had a reaction.
The highest quality ingredients in the form that is best absorbed and utilized by your body. The form and formulation of the vitamins and nutrients in your supplements make a difference! I have specifically sourced and formulated the ingredients in my products to be in their most bioavailable forms for maximum effectiveness.
Every product in my store has been personally vetted by me. Not only have I researched and tested every product I carry, I have also worked with thousands of patients to determine which formulations that produce the very best results.
Shopping is risk-free with my 90-day return guarantee. I stand behind all of the products I carry in my store. If for any reason you are not satisfied with your purchase, simply send the unused portion back to me, and we will refund your money.*
My team is committed to delighting and WOWing all of our customers with exceptional support. If you have questions about a product or how to place your order, my team of highly trained customer success specialists are here to support you via live chat, email, or phone.
*Exclusions apply, please see the FAQs.
Shipping Information
United States Shipping
Shipping rates are calculated after coupons/discounts and applicable taxes have been applied. Free shipping applies to ground shipping on all US orders. Free shipping applies to new orders only.
Shipping Time
- We aim to process orders within 1-2 business days*
- Overnight, 2 business day, and 3 business day shipping excludes weekends
- Overnight orders placed prior to 11am CST will arrive the next business day.
- Orders placed before 11am CST Friday will arrive Monday.
Shipping Location
If shipping to military bases, Hawaii, Alaska, and Puerto Rico, we recommend upgrading to 3-day (or faster) shipping.
Online Programs / Special Packaging
- Online programs, eCourses, and eBooks that do not require shipping will be made available immediately after your order is received.
- Our bars are heat sensitive and can melt. We strongly recommend shipping our bars with expedited shipping to prevent melting. We include an ice pack with our bars from May - October, but cannot guarantee they will not melt. Please select expedited shipping and ship to an address where you will be available to receive the bars.
*Occasional delays may occur due to stock availability, storewide sales, and unforeseeable weather conditions.

International Shipping
Some duty tax fees may apply, however, we cannot predict them in advance. Please refer to your Customs agency for more information. Amy Myers MD® is not liable for and will not refund any orders lost or confiscated by customers. Please see the FAQs for more information.
Shipping Time
- We aim to process orders within 1-2 business days*
- Once processed, international shipments may take 2-6 weeks to arrive. This can vary greatly based on the country and its customs process
Online Programs
- Online programs, eCourses and eBooks that do not require shipping will be made available immediately after your order is received
*Occasional delays may occur due to stock availability, storewide sales, and unforeseeable weather conditions.
Please note that customs regulations can change monthly in each country; if not adhered to properly, your order is at risk for being returned or confiscated. Amy Myers MD® is not liable for and will not refund any orders confiscated by customs; please note that you are purchasing at your own risk.
The following countries are ineligible to receive Amy Myers MD® deliveries per their customs laws and restrictions:
- Mexico
- Germany
- Spain
- Austria
- Sweden
- Poland
- South Africa
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- Free shipping applied to ground shipping on all US orders. Free shipping applies to new orders only.
**Applies to retail store only. Wholesale accounts must refer to wholesale policies and agreements.