Hannah R. — Verified customer
The easiest thing in my routine
I've got a prenatal, a tracking app and about four alarms. This is one gummy next to the kettle and I genuinely haven't missed a day in two months. It tastes like cranberry, not vitamins.
Women's Live Cultures Gummies
Advanced 4-in-1 daily support, made for the preconception phase.
- Halve Miscarriage Risk
- 2X Pregnancy Rates
- Clinical-Grade Defense
- Stabilize Reproductive pH
- Zero-Odor Protection
- 30-Day Biological Reset
- Biologically protects your pregnancy from Microbial Imbalance
- Targets the hidden cause of Silent Loss and infertility
- Doubles Conception Rates by stabilizing vaginal flora
- Restores a Clinically Healthy Environment in 30 days
- Supports a Hostile-Free Terrain for IVF and natural cycles
- Built for the whole cycle — pH climbs during your period, when your flora is most exposed
- Daily support through menstruation, when natural acidity is diluted and balance slips
Quantity
Buy two
get one free
get one free
Free tracked
delivery
delivery
30-day
money back
money back
Ships by — Ships to US Ships to UK Ships to CA Ships to AU Ships to NZFree delivery · one-time purchase · plain packaging
The Alviro Difference
Engineered For The Preconception Window. Most probiotics are general-purpose fluff. Alviro is precision-engineered for the high-stakes stretch before the positive test-the critical terrain where Microbial Imbalance is the hidden cause of Silent Loss.
Aggressive 4-in-1 Defense. Live cultures are only half the battle. We’ve combined them with high-potency Fibre to fuel colonization, Cranberry to lock down Urinary Tract Safety, and Vitamin C to bulletproof your immune response.
The Missing Piece Of Your Prenatal. Your prenatal handles the baby; Alviro handles the environment. It covers the Reproductive Vulnerability that doctors rarely mention, ensuring your terrain is Optimized, not hostile.
Clinical Power, Zero Friction. High-dose protection shouldn’t feel like a chore. One delicious, sugar-free gummy delivers the 5 Billion CFU your microbiome needs to stabilize, reset, and Protect Your Pregnancy from day 1.
The Protection Protocol: 2 Gummies Daily
Establish The Defensive Baseline. Take 2 gummies daily to saturate your microbiome and lock down the reproductive terrain before the window closes.
Consistency Is The Implantation Guard. Ensure the 5 Billion CFU arrive every morning to keep the environment optimized and Hostile-Free.
Lock In The Terrain. Store your pouch in a cool, dry place and keep the seal tight to preserve the Clinical Grade potency of every bear.
The Ideal Profile: Built for the High-Stakes TTC Phase
Engineered For The Preconception Elite. Alviro is for women who have already locked in the prenatal and the tracking apps, but refuse to leave the Microbiome Environment to chance.
The Missing Layer of Protection. If you are preparing for a natural cycle or IVF and want to ensure your Vaginal Terrain isn't a hostile factor, this is the non-negotiable next step in your protocol.
Medical Clearance. Speak to your doctor or midwife first if you are already pregnant, breastfeeding, or managing a specific infection. This clinical-grade supplement is designed to support, not replace, professional medical intervention.
Your cycle, and why the week of your period matters
Your vaginal pH is not the same all month. A healthy environment sits acidic, between 3.8 and 4.5, held there by Lactobacillus producing lactic acid.
Menstrual blood is close to neutral — around pH 7.4. For the days you bleed, that dilutes your natural acidity and pushes pH up. It is the point in the month when the environment is least protected, and it is why so many women notice changes in odour, discharge or irritation in the days around their period.
Tampons, pads and cups extend that window, and so do antibiotics, scented products and washes at any point in the cycle.
This is a daily routine for exactly that reason. Two gummies every day, through every phase — not something you take only when you notice a problem.
Ingredients
The Clinical 4-in-1 Defensive Stack
5 Billion CFU Live Cultures. Precision-dosed to saturate the reproductive terrain and maintain a dominant Microbial Defense against imbalance.
High-Potency Fibre (Prebiotic). The essential fuel source that ensures rapid microbial colonization and prevents a Hostile Environment from taking hold.
Focused Cranberry Extract. A concentrated secondary layer for Urinary Tract Safety during the high-stakes TTC window.
Vitamin C. The final reinforcement to Bulletproof Your Immune Response and protect the biological foundation.
Our 30-day guarantee
Take Alviro for 30 days. If it isn't for you, you don't pay for it.
Email support@tryalviro.com within 30 days and we'll refund you in full. All you need to do is post the pouch back and you don't need to explain yourself.
Shipping
Free delivery on every order, to all five markets we ship to. No minimum, no threshold, nothing added at checkout.
Every order ships tracked and insured, in plain packaging with nothing on the outside that says what's inside.
Your order will be on its way within 3 days. Your exact ship-by date is shown just above the Add to cart button.
We ship to the US, UK, Canada, Australia and New Zealand. You'll get a tracking link by email the moment it leaves us.
Orders outside the US may attract customs duties or import taxes, which are set by your country and remain the customer's responsibility — those are separate from delivery, which we cover.
Verified customers
What women say about taking it
Megan T. — Verified customer
Something I could actually do
So much of trying to conceive is waiting. Having one small thing I was doing for my own body every morning made more difference to my head than I expected it to.
Priya S. — Verified customer
Nobody had mentioned this to me
I'd read everything there is about folic acid and ovulation windows, and not one thing about vaginal pH. I wish I'd known about this side of it a year ago.
Eleanor K. — Verified customer
The week before my period is different now
That was always the worst stretch of my month and I'd just accepted it. Two cycles in and it is genuinely not the thing I plan around any more.
Nadia F. — Verified customer
I don't stop taking them on my period
I assumed you'd pause, like you do with half the things you take. Reading that those are the days it matters most made me keep going, and I'm glad I did.
Miscarriage Link
A High pH is a Hostile Terrain.
A healthy vaginal environment must stay between pH 3.8 and 4.5. When pH rises above 4.5, it signals a collapse of the protective Lactobacillus barrier, leaving the reproductive environment vulnerable to the microbial imbalances linked to silent loss.
3.84.55.05.56.0
In balance
Optimal Defense. Dominant Lactobacillus strains produce lactic acid to maintain the precise acidic barrier required for pregnancy protection.
Out of balance
Reproductive Risk Zone. When Lactobacillus fails, pH rises above 4.5. This shift creates a hostile terrain linked to increased miscarriage risk and implantation failure.
Alviro is a clinical-grade protocol engineered to maintain the dominant microbial environment necessary for the preconception window-specifically targeting a pull back into the optimal pH 3.8 to 4.5 defensive range.
The part nobody mentions
The Critical Terrain You Weren’t Told About.
The prenatal. The folic acid. The ovulation strips. You’ve locked in every visible factor, yet the biological terrain where it all begins is often left vulnerable.
The vaginal microbiome is the hidden defensive layer that almost nobody mentions-not at the appointment, not in the forums, and never on the box of your prenatal. Alviro bridges this gap, ensuring your internal environment is optimized for protection, not hostility.
The Biological Reset
Two Months To Protection
Sophie L. ~ Verified customer
The First 30 Days.
I noticed the difference in my pH levels almost immediately. It’s the only supplement that actually addresses the terrain nobody else talks about.
Hannah W. ~ Verified customer
Clinical Discrete Protection.
The plain packaging is essential. It’s clinical-grade defense delivered without the social pressure or questions from the neighbors.
Chloe M. ~ Verified customer
The Implantation Essential.
I’ve tried every prenatal, but this is the first one that feels like it’s actually protecting my environment before the window closes.
Sarah M. ~ Verified customer
Finally A Positive Test
After three years of negative tests and feeling like my body was a hostile environment, Alviro was the missing piece that finally stabilized my MICROBIAL FLORA and gave me the positive result i thought was impossible. it is the only thing that actually provided the CLINICAL PROTECTION i needed to stop the cycle of heartbreak and restore a CLINICALLY HEALTHY ENVIRONMENT for my pregnancy.
Sarah K. ~ Verified Customer
Actually Tastes Like Cranberry.
I was expecting that weird supplement aftertaste but these are just like normal gummies. makes sticking to the routine so much easier when you actually look forward to taking them.
Jessica P. ~ Verified Customer
Effortless Daily Habit.
No refrigeration or massive pills to swallow. It just sits on my kitchen counter and I grab two while making coffee. The easiest part of my whole TTC protocol.
Megan R. ~ Verified Customer
Fast Answers From The Team.
I messaged them about how this fits with my current prenatal and got a clear, clinical answer in minutes. Really puts your mind at ease knowing there’s real expertise behind the brand.
The formula
What the 4-in-1 actually means
Four working parts in a single daily gummy.
01
5 Billion CFU Live Cultures.
5 Billion CFU Live Cultures. Precision-Dosed to saturate the reproductive terrain and maintain a dominant Microbial Defense against imbalance.
02
High-Potency Fibre (Prebiotic)
The essential fuel source that ensures rapid microbial colonization and prevents a Hostile Environment from taking hold.
03
Focused Cranberry Extract
A concentrated secondary layer for Urinary Tract Safety during the high-stakes TTC window.
04
Vitamin C
The final reinforcement to Bulletproof Your Immune Response and protect the biological foundation.
The numbers
What 6,384 women rated it
By the numbers
What's actually in the pouch
5bn
5 Billion CFU Live Cultures. Precision-dosed to saturate the reproductive terrain and maintain a dominant Microbial Defense against imbalance.
4-in-1
Synergistic Stack engineered for high-stakes TTC defense.
60
Bear gummies per pouch for a full 30-day biological reset.
0g
Added sugar to protect your flora from inflammatory disruption.
Two gummies, next to the kettleThe week of my period is differentMy midwife was happy with itTastes like cranberry, not vitaminsArrived in plain packagingFinally something nobody had mentionedHaven't missed a day in two monthsSits next to my prenatal
The Silent Struggle
"I’ll never forget my best friend’s baby shower. i stood there smiling while everyone talked about due dates, but the second i got to my car, i broke down because it felt like my own body was failing a test i hadn't even been given the study guide for."
"My partner and i spent years obsessing over ovulation strips and calendars, timing everything to the second, only to be met with another negative test. we stopped telling people because explaining the silence felt like reliving the failure every single month."
"Family dinners were a minefield of "so when is it our turn for a grandbaby?" we’d just smile and change the subject, then drive home in a silence that felt heavy with the one piece of the puzzle we didn't know was missing-our reproductive terrain."
"If you are carrying this weight quietly, you aren't failing. you were just never told about the biological defense layer that actually protects the pregnancy you’re fighting for."
From the Alviro community
Before you order
Frequently asked questions
How many do I take, and when?
One gummy a day, at whatever time you'll remember. Nothing to time around your cycle.
Can I take this with my prenatal?
Yes — it's designed to sit alongside a prenatal rather than replace it. If you're on prescription medication or being treated for anything, check with your doctor first.
How long before I should judge it?
Live cultures work on consistency rather than speed. Take it daily and give it a full pouch — which is exactly why the guarantee runs 30 days.
Does it help around my period?
Your period is the point in the month when vaginal pH rises most — menstrual blood is close to neutral at around pH 7.4, which dilutes the acidity Lactobacillus works to maintain. That is the window when the most women notice changes in odour, discharge or irritation. Alviro is a daily routine rather than a treatment, so the cultures are arriving every day through that stretch, not starting after it.
Should I keep taking it during my period?
Yes — keep going straight through. There is nothing to pause, nothing to time, and no reason to stop. If anything, those are the days the routine is doing the most.
Can I take it while I'm on antibiotics?
Check with your doctor or pharmacist first, and never stop a prescribed course. Antibiotics are one of the most common reasons Lactobacillus levels fall in the first place, so many women choose to keep a daily culture going during and after a course — but that is a conversation for whoever prescribed it.
What should I expect in the first month, realistically?
Live cultures work on consistency rather than speed. Take two a day, every day, and judge it on a full pouch — thirty days. That is exactly why the guarantee runs thirty days and not seven.
Do the gummies contain sugar?
No. Sugar free, gluten free and vegan, made in a GMP-certified facility. Cranberry is what you'll taste.
Is this a treatment for an infection?
No. Alviro is a food supplement, not a medicine, and it isn't a treatment for BV, thrush, urinary tract infections or anything else. If you have symptoms, see your doctor or pharmacist — and don't stop any treatment you've been prescribed.
Is the packaging discreet?
Yes. Plain outer packaging with nothing on it indicating what's inside.
What if it's not for me?
Email support@tryalviro.com within 30 days for a full refund. No pouch to post back, no explanation needed.
Where do you ship?
Delivery is free on every order, with no minimum. We ship to the US, UK, Canada, Australia and New Zealand, tracked and insured, on its way within 3 days. Customs duties or import taxes outside the US are set by your country and remain your responsibility.