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For the work your gut does all day

Probiotic 40 Billion · 3-month supply

40 billion CFU · 4 strains · 3 bottles of 60 capsules

$99.00 Bought separately: $117.00Launch price

  • 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

Supports digestive health*Growing

What it supports

  • Digestive health*
  • Immune defenses*
  • Regularity, from B. lactis*
Choose how to buy
One-time purchaseSave $18Bought separately: $117.00 $99.00

Launch price$99 until January 15, 2027. From then, this supply is $107. All launch prices

Not sure this is the one? Find your protocol in five questions.

Three bottles, 90 days of gut support in one delivery. Three 30-day bottles in one delivery, at $1.10 a day: $18 less than buying them one at a time.

Full details and questions
Save $9 in the Gut & Immunity Protocol
A woman makes a heart shape with her hands over her stomach

Your ritual

For the work your gut does all day

  1. Take one capsule with a daytime meal.
  2. Take the second with your evening meal.
  3. 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 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

  1. 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.
  2. 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.
  3. 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.
  4. 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

Why stock up

  • No gaps. A consistent daily probiotic supports a steady gut environment.*
  • One delivery instead of 3 separate orders
  • Free US shipping

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

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
Supplement FactsServing Size 2 Capsules
Servings Per Container 30
IngredientAmount 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 Polysaccharide60 mg**
Fructooligosaccharide24 mg**

** Daily Value not established.

Other ingredients: Hypromellose (vegetable capsule), Rice maltodextrin, L-Leucine.

Where it sits in your day

  1. Any time of day

    Probiotic 40 Billion

2 capsules daily: 1 during the day and 1 in the evening.

What to expect, and when

  1. First weekSome people notice mild changes in digestion as the gut adjusts. Splitting the two capsules helps.
  2. 4 weeksGive it at least 4 weeks of daily use.
  3. 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

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

What you get, and what you don’t

The supplement aisle runs on small print. Here is ours, in large print.

Cellovi Probiotic 40 Billion compared with what is common in supplements
What mattersCellovi Probiotic 40 BillionMany supplement brands
EvidenceCellovi Probiotic 40 Billion: Every claim graded Established, Growing or FrontierMany supplement brands: Claims are rarely graded for strength of evidence
ProofCellovi Probiotic 40 Billion: Key studies on the page: who took part, how much they took, what changedMany supplement brands: Some pages link no studies or don’t state amounts
LabelCellovi Probiotic 40 Billion: Supplement Facts as text you can readMany supplement brands: Some show them only as an image
Your dayCellovi Probiotic 40 Billion: When to take it, with a simple ritual to make it stick, and a full-day guideMany supplement brands: Most give a dose, not a place in your day
First orderCellovi Probiotic 40 Billion: 60-day first-order guaranteeMany 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

  • 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

Better together

Probiotic 40 Billion is part of the Gut & Immunity Protocol, a 2-product routine priced below buying them one by one.

ReviewsNew, so no reviews yet. Only verified buyers review, and every rating shows, one star to five. How we handle reviews

Probiotic 40 Billion · 3-month supply$99.00

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