For the strength you can’t see
Gut & Immunity
Your gut is home to most of your antibody-making cells.*
Probiotic 40 Billion · Colostrum Powder
$69.00 Bought separately: $78.00 Save $9Launch price
See the protocol: Gut & Immunity
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Proprietary Blend of Probiotic Bacteria:(40 Billion CFU) MAKTREK® (Bi-Pass Technology) Lactobacillus Acidophilus (La-14) Bifidobacterium Lactis (Bl-04) Lactobacillus Plantarum (Lp-115) Lactobacillus Paracasei (Lpc-37) | 800 mg | ** |
| Complex Marine Polysaccharide | 60 mg | ** |
| Fructooligosaccharide | 24 mg | ** |
** Daily Value not established.
Other ingredients: Hypromellose (vegetable capsule), Rice maltodextrin, L-Leucine.
For the work your gut does all day
Probiotic 40 Billion
40 billion CFU · 4 strains · 60 capsules
- Third-party lab tested
- GMP-certified facility
- Gluten-free
- Lactose-free
- Corn-free
+3 moreShow less
- All natural
- Allergen-free
- Hormone-free
Goals: Gut & immunity · Daily essentials
Four named strains, 40 billion strong. Support for easier, more regular digestion.* In a 4-week placebo-controlled trial, adults with irregular bowel habits took a six-strain formula that included three of our strains, and reported easier digestion and more satisfying bowel habits.* Each serving gives you 40 billion shelf-stable live cultures from four named strains to support digestion and immune defenses, plus a prebiotic fiber (FOS).*
Supports digestive health*Growing
What it supports
- Digestive health*
- Immune defenses*
- Regularity, from B. lactis*
Your ritual
For the work your gut does all day
- Take one capsule with a daytime meal.
- Take the second with your evening meal.
- Keep the lid tight and the bottle somewhere cool.
Two meals, two capsules, every day.
The moment is when you take it. The evidence is below.
You know your days best. We bring the evidence.
What is inside
- 40 billion CFU per 2 capsules
- 4 named strains: L. acidophilus La-14, B. lactis Bl-04, L. plantarum Lp-115, L. paracasei Lpc-37
- MAKTREK® Bi-Pass Technology, a marine polysaccharide complex designed to help protect probiotics through stomach acid
- 24 mg FOS (fructooligosaccharides), a prebiotic fiber
- 60 vegetable capsules, a 30-day supply
- Made in the USA in an independently audited, GMP-certified facility, with globally sourced ingredients
- Third-party lab tested
- $1.30 a day
For your high standards
- Evidence graded Growing, with the key studies on this page
- Quality we check before we sell: we review the quality documents for every product, and it is third-party lab tested
- 60-day first-order guarantee. How it works
- Real people: write to hello@cellovi.com and a person replies within 24 to 48 hours, Monday to Friday
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Proprietary Blend of Probiotic Bacteria:(40 Billion CFU) MAKTREK® (Bi-Pass Technology) Lactobacillus Acidophilus (La-14) Bifidobacterium Lactis (Bl-04) Lactobacillus Plantarum (Lp-115) Lactobacillus Paracasei (Lpc-37) | 800 mg | ** |
| Complex Marine Polysaccharide | 60 mg | ** |
| Fructooligosaccharide | 24 mg | ** |
** Daily Value not established.
Other ingredients: Hypromellose (vegetable capsule), Rice maltodextrin, L-Leucine.
What the evidence says, plainly
Encouraging human trials, building year by year. A research-backed part of a daily routine.
Supports digestive health
Growing- Per serving
- 40 billion CFU
Key studies
- Zheng et al., 2023Randomized, double-blind, placebo-controlled Adults with irregular bowel habits took a six-strain formula with three of our strains (Bl-04, Lp-115, Lpc-37), for 4 weeks. Digestive symptoms eased and satisfaction with bowel habits improved, compared with placebo.
- Paineau et al., 2008Randomized, double-blind, placebo-controlled Placebo-controlled study in healthy adults, including La-14 and Bl-04. Both strains were linked to a stronger antibody response to an oral vaccine.
- Mäkelä et al., 2023Randomized, triple-blind, placebo-controlled Healthy university students took Lpc-37 for up to 10 weeks during exam season. Well tolerated, with digestion that stayed steady through a stressful season.
- Taverniti et al., 2019Randomized clinical study Healthy adults took a four-strain blend with the same four species as ours, two of them the identical strains La-14 and Bl-04, at 7 or 70 billion CFU. More of the strains were recovered at the higher dose, and sooner.
Every study behind this grade, explained · Reviewed October 2026 by the Cellovi team
Where it sits in your day
Day and evening
Probiotic 40 Billion
2 capsules daily: 1 during the day and 1 in the evening.
What to expect, and when
- First weekSome people notice mild changes in digestion as the gut adjusts. Splitting the two capsules helps.
- 4 weeksGive it at least 4 weeks of daily use.
- OngoingProbiotic bacteria stay only while you keep taking them, so consistency matters.
Timelines come from the human studies. What counts is consistency: in one study of 96 adults, a new daily habit took 66 days on average to feel automatic (Lally et al., 2010). Pair it with something you already do every day. Your first order comes with our 60-day first-order guarantee. How it works
Who it is for
Anyone focused on everyday digestion and immune health.*
Before you start
Interactions and cautions
Ask your pharmacist or doctor first if you take:
- an antibiotic: ask your pharmacist how to space your probiotic around it.
Check with your doctor first if you:
- have a weakened immune system, a serious illness or a central line, or are recovering from surgery
- are pregnant or nursing
- are buying for a child: this probiotic is made for adults
Not a complete list. Show your pharmacist everything you take, including other supplements. Sources: NCCIH, probiotics; NIH ODS, probiotics.
Label warnings and storage
No refrigeration needed: keep the lid tightly closed, away from heat and humidity. Consult your doctor before use if you are immunocompromised, pregnant, nursing, under 18, or have a medical condition.
Do not take more than 2 capsules a day. Keep out of reach of children. Do not use if the safety seal is damaged or missing.
Report a reaction: safety@cellovi.com
- GMP-certified facilityAudited, third-party lab tested
- Made in the USA, with globally sourced ingredients
- Four named strains40 billion CFU of live cultures per serving
- Free US shippingOn $50 or more, and every subscription
What you get, and what you don’t
The supplement aisle runs on small print. Here is ours, in large print.
| What matters | Cellovi Probiotic 40 Billion | Many supplement brands |
|---|---|---|
| Evidence | Cellovi Probiotic 40 Billion: Every claim graded Established, Growing or Frontier | Many supplement brands: Claims are rarely graded for strength of evidence |
| Proof | Cellovi Probiotic 40 Billion: Key studies on the page: who took part, how much they took, what changed | Many supplement brands: Some pages link no studies or don’t state amounts |
| Label | Cellovi Probiotic 40 Billion: Supplement Facts as text you can read | Many supplement brands: Some show them only as an image |
| Your day | Cellovi Probiotic 40 Billion: When to take it, with a simple ritual to make it stick, and a full-day guide | Many supplement brands: Most give a dose, not a place in your day |
| First order | Cellovi Probiotic 40 Billion: 60-day first-order guarantee | Many supplement brands: Many take back only unopened bottles, or charge a fee |
Based on our review of 12 supplement brands’ websites, October 2026. How our guarantee works
Reviews
New, so no reviews yet
Here is what you can check instead. Every claim on this page has an evidence grade and a link to the study behind it. We won’t fill this space with borrowed praise.
We started Cellovi because shopping for supplements meant wading through big promises, hidden doses and claims with no study in sight. So we built the brand we wanted to buy from.
Your reviews come next, and we’ll read every one.
Be among the first to review
We ask every buyer once, after delivery. Only verified buyers post, every rating shows from one star to five, our team and families never review, and nothing is offered in return.
Questions, answered
Probiotic research is strain-specific. Naming every strain tells you exactly what you’re taking, so you can look up the research on each one.
Some people notice mild changes in the first week as the gut adjusts. Splitting the two capsules helps.
Yes, but timing matters, so ask your pharmacist how to space it around your antibiotic.
Give it at least 4 weeks of daily use. Probiotic bacteria stay only while you keep taking them, so consistency matters.
Better together
Probiotic 40 Billion is part of the Gut & Immunity Protocol, a 2-product routine priced below buying them one by one.
Probiotic 40 Billion$33.15 subscribed · $39.00 once
Feel like it.