Product Description
Your gut takes a beating during heavy training. High-carb fueling, training stress, travel, and back-to-back sessions all disrupt the balance of bacteria in your digestive tract — and when your gut is off, everything else follows: bloating, irregular digestion, compromised nutrient absorption. Optibac Bifido & Fibre gives your gut the targeted support it needs to stay consistent, so the nutrition you're putting in actually works for you.
Each sachet delivers 25 billion live cultures of Bifidobacterium lactis BB-12® — the world's most researched strain of the entire Bifidobacteria family — combined with 4g of prebiotic FOS fiber that feeds and grows your natural gut bacteria from the inside out. This isn't a generic probiotic. It's a precision-formulated synbiotic that works on two levels simultaneously.
Clinically Researched Strain – BB-12® is one of the most studied probiotic strains in existence, with thousands of participants across gold-standard clinical trials. It's been shown to survive stomach acid and reach the gut alive, where it complements and supports your existing gut bacteria.
Prebiotic Fiber That Feeds the Good Stuff – The 4g of FOS (fructooligosaccharides) in each sachet acts as food for beneficial gut bacteria, particularly Bifidobacteria. This prebiotic component actively increases the levels of good bacteria already present in your gut — not just adding new ones, but growing what you already have.
Supports Regularity and Immune Function – Consistent gut bacteria balance supports healthy, regular digestion. BB-12® has also been shown in research to stimulate immune responses including immunoglobulins — important for athletes whose immune systems are regularly challenged by training load.
The synbiotic combination of probiotic and prebiotic in one sachet meets the International Scientific Association of Probiotics & Prebiotics' recommended daily intake of 3–5g of fermentable fibers. One sachet covers it. No refrigeration needed, no artificial flavors or colors, no dependency. Just clean, effective gut support in a format you can take anywhere — mix it into water, a smoothie, or any cool non-acidic food.
Consistent gut health is one of the most underrated performance variables in endurance sport. When your digestive system runs smoothly, you absorb more from your nutrition, recover faster, and spend less energy managing GI distress. Optibac Bifido & Fibre is the daily foundation that keeps everything else working.
How to Use Optibac Probiotics Bifido & Fibre
Daily Use: Take 1 sachet per day mixed into cool, non-acidic food or drink — water, a smoothie, or yogurt all work well. Avoid hot liquids, which can damage live cultures.
Initial Phase: Up to 4 sachets daily may be taken during the initial adjustment period if targeting specific digestive concerns. Scale back to 1 per day once regularity is established.
Pro Tip: Take with food rather than on an empty stomach to help the cultures survive transit and reach the gut alive. Consistency matters more than timing — pick a daily routine and stick with it.
Note: Some users experience temporary flatulence during the first few days as the gut adjusts to the FOS fiber. This is normal and typically resolves within 3–4 days.
Supplement Facts
Single Serving
Serving Size: 1 sachet
Serving Per Container: 1
| Amount Per Serving | ||
|---|---|---|
| % Daily Value* | ||
| Calories 15 | ** | |
| Total carbohydrate 6g | ** | |
| Dietary Fibre 4g | ** | |
| Sugars 2g | ** | |
| Incl. added sugars 1.6g | ** | |
| Prebiotic (FOS) 4g | ** | |
| Probiotic cultures 90mg | ** | |
| Bifidobacterium lactis BB-12® | ** | |
| Total probiotic cultures 25billion CFU | ** | |
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Daily Value (DV) not established
Always Happy Promise: Don't like a product? Tell us within 30 days of receipt and we'll make it right and make you happy. Here at The Feed, we want you to love your experience and the sports nutrition products you purchase. If, for any reason, you are not satisfied with your nutrition specific purchase, tell us.
We do not accept returns on food items that have been opened, but we will issue a store credit if you are unsatisfied. In the event of a return, you must first contact us before sending back a return shipment.
Consumable products over $40 receive a 50% store credit. This includes specialty nutrition products such as ketones or supplements/vitamins.
Optibac Probiotics Bifido & Fibre FAQ's
Everything you need to know about Optibac Probiotics Bifido & Fibre.



Once daily, mixed into cool non-acidic food or drink — yogurt, a smoothie, water, or oatmeal. Keep it cool: heat kills the live cultures, so skip the hot coffee. Morning with breakfast is the easiest habit to stick to.
Most people notice improved regularity within one to two weeks. Give it a full month of daily use before you evaluate the broader gut balance benefits — the microbiome shifts gradually, not overnight.
BB-12 is the most researched strain in the entire Bifidobacteria family, studied in thousands of people across gold-standard clinical trials and proven to survive stomach acid and reach your gut alive. It's not a generic bacteria count — it's the most clinically validated Bifidobacteria strain available, at 25 billion CFU per sachet.
FOS — fructooligosaccharides — is the prebiotic fiber that feeds the beneficial bacteria already living in your gut. Think of BB-12 as the seeds and FOS as the fertilizer. At 4g per sachet, Bifido & Fibre hits the minimum daily intake recommended by the International Scientific Association of Probiotics & Prebiotics.
Two things: strain specificity and the synbiotic pairing. BB-12 has a documented clinical record most commodity probiotic strains don't have. And combining 25 billion CFU of BB-12 with 4g of FOS in one sachet — a synbiotic — is more effective than probiotics or prebiotics taken separately.