OptiBac Probiotics Review – How Does This Supplement Measure Up?

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By Scot Mills

Reviewed by Juliana Tamayo, MS, RDN - Last Updated

OptiBac Probiotics Review

OptiBac is here to help you…naturally. They are a family run business and experts in the field of friendly bacteria and live cultures, and their award-winning supplements are made successful through their understanding that probiotics are not just a “one-size-fits-all” remedy.

OptiBac has quite a few products, and you may be familiar with some already, such as OptiBac Probiotics For Women. In this review, we’ll take a look at OptiBac Probiotics, also called OptiBac Probiotics One Week Flat. We’ll go through this supplement’s ingredients, its benefits, and more. Let’s get started!

OptiBac Probiotics One Week Flat

About OptiBac Probiotics

When it comes to supplying your system with beneficial bacteria, OptiBac has your back. They specialize in probiotics and ONLY in probiotics, meaning they spend a lot of time focused on things like ensuring cultures are alive and active when they reach your gut.

They perform extensive research on all the probiotic strains they use, and have numerous awards to show for it. This includes the Queen’s Award for Enterprise (it’s a British company) and Rude Health Awards, along with many others.

OptiBac Probiotics Box And Sachet

OptiBac Probiotics Benefits

Designed For Everyone

Since everyone is different, OptiBac produces formulas for various needs that go beyond the usual men’s, women’s, and children’s versions. With probiotics specially formulated for everything from pregnancy to cholesterol management, if there’s a condition friendly bacteria can help with, OptiBac probably makes a formula for it.

They Stay Alive In You

Beneficial bacteria are only beneficial when they’re alive and colonizing in your gut, which doesn’t always happen. That’s because your stomach is a harshly-acidic environment that kills all but the toughest—or most well-protected—bacteria passing through.

All OptiBac’s products are scientifically proven to colonize safely, and productively.


OptiBac products are researched in leading laboratories worldwide for safety and survival, and feature some of the most advanced strains there are.


OptiBac comes in either capsules, or a convenient powder for consumption in food or drink. Either way, it’s easy to transport them for convenient use anywhere since the company’s “fridge-free technology” enables the product to survive (and thrive) at room temperature.


Not only are friendly bacteria living members of your internal community that you need no matter what, but OptiBac also has versions suitable for vegetarians and vegans, and all their products are free of gluten, dairy, nuts, and eggs.

Naturally sourced maltodextrin fiber and fructooligosaccharides (FOS) are also included in formulas for bacteria to feed on and stay alive.

OptiBac Probiotics One Week Flat Benefits

OptiBac Probiotics Ingredients

Lactococcus lactis-1058

Originally discovered for its use in fermented dairy products, the latest versions of Lactococcus lactis have been bio-engineered to be safe and free of endotoxins. Since it’s considered a non-colonizing bacterium, they don’t replicate to high numbers or displace any of the native bacteria in your gut.

They also work alongside the other living organisms in OptiBac rather than combating them, as some types of probiotics do.

Lactobacillus caseil-215

As a guardian against harmful organisms, Lactobacillus caseil can not only protect you from illness; it may also help against allergies, acne, and rheumatoid arthritis.

Lactobacillus acidophilus-52

Common in fermented dairy products, Lactobacillus acidophilus  is also known for its ability to survive stomach acid and attack pathogens, as well as in removing undesirable molecules such as allergens from foods. It also helps produce peptides from proteins to help break them down, and it increases the bioavailability of nutrients from foods.

Bifidobacterium bifidum Rosell-71

One of the most common gut bacteria is Bifidobacterium, which populates your gut and provides a multitude of health benefits. These include boosting your immune system, helping against IBS, reducing the occurrence of constipation, and lowering bad cholesterol in the blood.

Fructooligosaccharides (FOS) and Maltodextrin 0.3 g

Bacteria need nutrition too, which they get from fibers known as “prebiotics.” These include Fructooligosaccharides and maltodextrin, both of which are naturally derived vegetable fiber, which, along with keeping colonies of friendly bacteria healthy inside you, also help reduce levels of bad cholesterol in your blood.

OptiBac Probiotics Ingredients

Do OptiBac Probiotics One Week Flat Work?

As one of the better probiotic formulations on the market, OptiBac works. That’s because the company has done its research in keeping the bacteria in their products alive from sachet-to-gut, and without need for refrigeration.

This is not always the case with other companies, especially when it comes to multiple-strain formulas.

For instance, just because the bacteria you’re taking are friendly to you doesn’t mean they’re friendly to each other, and without careful formulation, this can result in little more different strains killing each other off.

Some bacteria also survive the gut better than others, and with their careful research and attention to what works, OptiBac has figured out how to maximize the number that makes it safely to their new home in you.

Who Is OptiBac Probiotics One Week Flat Best For?

Everyone needs probiotics, especially since you literally can’t live without them. We also have different makeups, environments, and needs so that while one type of bacteria in one amount may benefit you, it’s not necessarily as beneficial for someone else.

Granted, nearly all probiotics are safe for everyone, with the only side effects typically being bloating and gas from the prebiotics, or in rare cases, constipation, so mostly there’s nothing to worry about.

But those with compromised immune systems or chronic illness, or who are on medications should consult with their doctor before using probiotics. Likewise, the use of antibiotics targets all bacteria, including the good guys, so the use of a strong probiotic formula to repopulate your gut bacteria is advised once you’re off them.

OptiBac also recommends that the product be used only by those aged 4-years and up.

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Claims vs. Reality

Through careful research and dedication to developing products that deliver live bacteria to your gut consistently and effectively, OptiBac comes through on all their claims.

As they say, it’s easy to use, needs no refrigeration, and is scientifically proven to survive stomach acid.

Are OptiBac Probiotics Safe?

In rare instances, constipation may occur with probiotics, and prebiotic fibers can also cause some temporary bloating and gas.

The good news is that a little bloating and gas at first means those little guys are doing their job in you and improving your digestion!

That and the farting will stop as soon as they finish the heavy initial cleanup.

Where To Buy OptiBac Probiotics One Week Flat

For a 1-week, 28-sachet supply, OptiBac Probiotics One Week Flat sells for $34.99, or you can purchase 7-sachels for $12.99. While this seems a bit steep for only a week’s worth, you also need to realize that it is designed to be used once-per-month as an intensified boost to your gut bacteria colonies. With that in mind, it’s not such a bad value, and you can also stock up with an order of $100 or more to get free shipping.

OptiBac Probiotics Website

In addition to the company’s own website, OptiBac products can be purchased online through retailers such as Amazon, as well as other major and independent web retailers specializing in probiotic supplements.


Overall Rating:
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Scot Mills

Scot Mills is a nutrition writer who uses his unique skills and passions for natural products to share his research with others. Along with over twenty-years of experience working in natural industry sales, Scot graduated at the top of his class as a business major, and is a member of the Sigma Beta Delta honors society for his outstanding scholastic achievements. Scot specializes in using the latest scientific research to review supplements objectively. When he isn’t writing or hitting the gym, Scot can be found enjoying nature on epic trail runs, hikes, and mountain bike rides.

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