United States

Add 1 / Save $5


Optimal Probiotic 8™

The phrase “gut bacteria” might not be the sexiest thing you’ve ever heard. We get it. But, guess what, a healthy microbiome is essential for weight loss, good mood, deep sleep, productive energy, healthy skin, heart health, brain health, and a balanced immune system.

Now, do we have your attention? Sure, this stuff is great for bloating and tummy issues … but it is SO much more than that! (Especially in today’s toxic world.) Read on.

$54.95 USD Each

$44.00 USD SmartShip and SAVE $10.95 USD

What is Add 1 / SAVE $5

The more you buy, the more you save! Add a second qualified item to your cart and we’ll knock off 5 bucks. Same with the third and fourth item! You can save up to $15 with this simple program. The majority of products and packs (anything that’s $40 or more, except limited time offers) qualify for this program and are noted on their product page.

*This promotion does not apply to all products.
Save Money With SmartShip
The SmartShip program is easy, convenient, flexible and most importantly … allows you to SAVE about 15%! Just commit to ordering the same products monthly and we reward you for that loyalty with a discount. This is a simple way to ensure an uninterrupted supply of your favorite products from The Happy Co. You can change or cancel your SmartShip at any time. No problem. So, you really have nothing to lose … except about 15% of the price! Just chat with Customer Service below if you have any questions.
30 Day Guarantee
30 Day Guarantee Full 30 Day Guarantee
Shipping & Returns

Most orders ship via Ground shipping, and typically take 3–5 business days.

Full Shipping and Returns

*We are rebranding our packaging. You may see previous branding on your products. As inventory is replenished, we will be sending out the newly branded packaging.

Listen to your gut on this one.

Ready to feel cleaner and leaner? How about tighter, brighter, and lighter?

Let the “8” take care of what you ate. (And what you breathe.) Some of the stuff we eat should barely be considered food - artificial colors, flavors, sweeteners, binders, fillers, hormones, herbicides, pesticides, chemicals, and genetically-modified ingredients invented in a lab and mass-produced in a factory instead of grown in a field. No wonder our tummies are bloated, our brains are foggy, and our bodies are gummed up. These synthetic food additives (as well as many of the airborne toxins in our modern world) attack the trillions of bacteria in your intestines which keep you healthy. Get ready to fight back!

Optimal Probiotic 8 contains eight different strains of beneficial probiotics, prebiotics, and postbiotics. (Yes, postbiotics are a thing.) Every capsule is loaded with 23 billion healthy bacteria, including our own patented strain of bacteria called Lactobacillus plantarum GKM3. Unlike most gut health products on the market, these bacteria are tested to arrive, alive! No need to refrigerate, this patented formula lasts on the shelf and is designed for the acidic gut environment. Everything your body needs. Nothing it doesn’t. Created and clinically-tested by doctors. Gluten-free. Soy-free. Dairy-free. Wheat-free. No sugar.

Listen to your gut on this one. Your health is about to take a turn for the better. Much better.

All of our products come with a 100% Happy Guarantee!


A healthy microbiome and the maintenance of healthy gut flora may help to support:


  • Balanced immune system
  • Productive energy
  • Healthy skin
  • Heart health


  • Reduced bloating
  • Minimizes GI discomfort
  • Healthier bowel movements


  • Elevated mood
  • Improved mental clarity
  • Deeper sleep

No refrigeration needed.




Key Ingredients


Proprietary Blend, Lactobacillus plantarum GKM3, Lactobacillus brevis GKL9, Lactobacillus acidophilus GKA7, Bifidobacterium bifidum GKB2, Lactobacillus casei GKC1, Lactobacillus reuteri GKR1, Bifidobacterium longum GKL7, Lactobacillus gasseri GKG1.

Other Ingredients:

Microcystalline Cellulose, Oligosaccharides Powder (Lactose, Fructo-oligosaccharides, Galactooligosaccharides, Maltodextrin, Water), Magnesium Stearate, Lactobacillus plantarum (inactivated), Silicon Dioxide, Bromelain, Inulin, Maltodextrin, Capsule (Hydroxypropyl Methylcellulose, Water, Titanium Dioxide, Gellan Gum).

Download the Optimal Probiotic 8 Fact Sheet

Learn about the science behind Optimal Probiotic 8

Download frequently asked questions about Optimal Probiotic 8




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