
Delivery
Actually makes it past your stomach.
Most probiotic capsules are corpses by the time they reach the gut. Delayed-release shells get the live cultures where they're supposed to do their work.
Withanly · Probiotic 40 Billion with Prebiotics
4.7 · 215 reviews60 delayed-release vegan capsules · 40 billion CFU · 6 strains + prebiotic
Maybe it was antibiotics. Maybe it was a holiday where the food disagreed with you. Maybe it's just that the bloat after meals has been sticking around longer than it used to. One capsule a day, 40 billion live cultures, six strains, and a prebiotic to feed them — in a capsule built to survive stomach acid instead of dying on the way through. Most probiotics never actually arrive.
“Bloating I'd lived with for years just quietly went away.”
Pre-launch tester feedback. Individual results vary.

Bottle, label, capsule, and packaging appearance may vary slightly from images shown.
Withanly · Probiotic 40 Billion with Prebiotics
4.7 · 215 reviews60 delayed-release vegan capsules · 40 billion CFU · 6 strains + prebiotic
Maybe it was antibiotics. Maybe it was a holiday where the food disagreed with you. Maybe it's just that the bloat after meals has been sticking around longer than it used to. One capsule a day, 40 billion live cultures, six strains, and a prebiotic to feed them — in a capsule built to survive stomach acid instead of dying on the way through. Most probiotics never actually arrive.
“Bloating I'd lived with for years just quietly went away.”
Pre-launch tester feedback. Individual results vary.
Free US Shipping · 30-day money-back guarantee
Free US Shipping · Ships from US warehouse · US orders only
The formula
A quieter system

Delivery
Most probiotic capsules are corpses by the time they reach the gut. Delayed-release shells get the live cultures where they're supposed to do their work.

Comfort
The post-meal heaviness, the irregular week, the rumble at the worst moment — the six strains in here are the families gut-health research keeps coming back to.

Immune
Around 70% of your immune system sits in your gut. The healthier the floor down there, the less every winter cough turns into your weekend off.

01
One capsule, twice a day, with water. No timing dance, no stimulant cycling.

02
Most people notice a steadier daytime baseline within 7–10 days — not a hit, a settling.

03
By week 3–4, the 3am wake-up softens. You’ll know it’s working when you stop noticing the time.
What's inside
Every ingredient, the form we use, the dose per serving, the mechanism that makes it relevant, and the peer-reviewed study that backs it.
Proprietary blend
Form: 10 billion CFU (per 1-cap serving)
One of the most-studied probiotic strains in clinical research, found naturally in fermented foods. Studied for supporting digestive comfort and the gut's natural barrier function.
Health Benefits of Probiotics: A Review · ISRN Nutrition, 2013Proprietary blend
Form: 7 billion CFU (per 1-cap serving)
A hardy lactobacillus strain with one of the deepest research records in gut-health literature — studied for supporting digestive transit and a balanced microbiome.
Can the Evidence-Based Use of Probiotics (Notably Saccharomyces boulardii CNCM I-745 and Lactobacillus rhamnosus GG) Mitigate the Clinical Effects of Antibiotic-Associated Dysbiosis? · Advances in Therapy, 2024Proprietary blend
Form: 8 billion CFU (per 1-cap serving)
A bifidobacterium strain particularly well-studied for digestive regularity in healthy adults. Native to the large intestine.
Effect of Bifidobacterium animalis subsp. lactis HN019 on intestinal transit time · Beneficial Microbes, 2011Proprietary blend
Form: 15 billion CFU combined (per 1-cap serving)
Three additional strains rounding out the genus diversity of the formula — chosen for their complementary research profiles across digestive-comfort and gut-barrier endpoints.
Probiotic mechanisms of action · Annals of Nutrition and Metabolism, 2012100 mg per serving
Form: 100 mg FOS prebiotic fiber (per 1-cap serving)
A short-chain prebiotic fiber that selectively feeds Bifidobacterium and Lactobacillus strains in the gut. The 'food' that makes the probiotic colonisation persist.
Prebiotics: Definition, Types, Sources, Mechanisms, and Clinical Applications · Foods, 2019These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
What the research says
Peer-reviewed human trials on the active ingredients that anchor what people feel.
Beneficial Microbes · 2011
B. lactis HN019 supplementation improved intestinal transit time and digestive-comfort scores over 12 weeks vs placebo.
Read the studyISRN Nutrition · 2013
Comprehensive review of Lactobacillus and Bifidobacterium strains across digestive and immune endpoints.
Read the studyFoods · 2019
Review of FOS and other prebiotic fibers across mechanism and clinical research.
Read the studyAdvances in Therapy · 2024
Evidence review of L. rhamnosus GG across digestive-health and microbiome-balance endpoints.
Read the studyCited studies were conducted on the active ingredients in this product. Individual responses vary. These statements have not been evaluated by the Food and Drug Administration.
Try without risk
Try this for a full month. If it isn't what you were looking for — even with an empty bottle — write us within 30 days of delivery and we'll refund the order. No return required. Email us — we'll process the refund, the bottles stay with you. No restocking fee, no return shipping, no “are you sure?” forms.
Reach contact@withanly.com — average refund response under twelve hours.
Verified buyer reviews
4.7
215 reviews
93%
would recommend
Real reviews only
Be one of the first to leave a review after you try it — and we'll send you $5 off your next order as thanks.
Email us when you're ready to review →What people taking Lactobacillus acidophilus, Lactobacillus rhamnosus are saying
These quotes are from users of products containing Lactobacillus acidophilus, Lactobacillus rhamnosus — not Withanly— sourced from public Reddit and Quora threads. Click the source link below each quote to read the original in context. Quotes have had competitor brand names removed for legibility; nothing else is edited.
Lactobacillus acidophilus
“You're just self-diagnosing here mate. L. Acidophilus is a known probiotic and a normal inhabitant of the human gut. AFAIK probiotic species also usually don't even colonize the gut but just pass through. I'm not saying you aren't suffering, but L. Acidophilus is probably not the reason. You probably just have a dysbiotic gut generally. Restoring balance and diversity is more important than trying to kill off individual species in your gut.”Read the original
“Apr 28 Your stomach is a vat of hydrochloric acid designed to melt foreign microbes. Most probiotics die there, but Bacillus clausii survives by wearing built-in biological armor. The fundamental difference between Bacillus clausii and Lactobacillus lies in their life cycles and cellular structures. Lactobacillus species are vegetative bacteria. They are biologically active but highly vulnerable to environmental stressors like heat, time, and gastric acid. Because of this fragility, many Lactobacillus products require refrigeration to keep the microorganisms viable, and a significant percentage of the”Read the original
Lactobacillus rhamnosus
“I suspect you might not be consistently eating the right foods for feeding/maintaining your L. rhamnosus culture. Sauerkraut, kefir, & kimchi would probably be good options, as well as yogurt. A variety of these every day of the week would help establish the culture.”Read the original
“I have been taking Pure GG (25 billion l. rhamnosus) for about a month and it has been hugely helpful for me. I have mcas, pots, heds and cfs (or my cfs is a combo of the aforementioned)”Read the original
Quotes are user-generated content from public forums about the ingredient class — not testimonials for Withanly. Withanly does not endorse the original posters or compensate them for these quotes. Individual responses vary. These statements have not been evaluated by the Food and Drug Administration.
Honest answers
The research on digestive-comfort endpoints clusters around 10–50 billion CFU. We chose 40 billion as a defensible mid-range — meaningful colonisation potential, without the unnecessary cost-loading of 100B+ formulas that lack additional research backing.
Different strains carry different evidence profiles. Lactobacillus covers digestive transit; Bifidobacterium covers regularity; the rest broaden microbiome diversity. Six is the research-supported sweet spot.
No. The delayed-release capsule and strain selection are stable at room temperature. Refrigeration is fine and extends shelf life but is not required.
Most people describe a digestive baseline shift in 7–14 days. The deeper microbiome rebalancing builds over 8–12 weeks of consistent use.
Ideally before food in the morning, with water. The empty stomach is the easiest transit path; food slows transit and exposes the capsule to acid for longer.
Some people notice mild gas the first 3–5 days as the microbiome adjusts. This typically resolves on its own. If it persists past a week, halve the dose to one capsule every other day.
Take the probiotic 2–3 hours after the antibiotic dose. Many physicians recommend probiotic use during and after a course of antibiotics — talk to yours for specific guidance.
Most probiotics are considered safe during pregnancy and breastfeeding, but talk to your physician before starting any new supplement during this period.
Email contact@withanly.com within 30 days of delivery and we'll refund the full amount — you don't need to send the bottles back.
From our US warehouse, USPS Ground typically arrives in 2–4 business days within the contiguous US.