The Lactic Acid Metabolizer
Lactic acid is the drag that keeps you off the gym floor and ends your evening early. V·Nella is a daily capsule that turns it into energy you can actually use.
Less Fatigue
Veillonella metabolizes lactic acid — the by-product behind exercise fatigue.
More Stamina
Converted into short-chain fatty acids your body can actually burn.
Faster Recovery
Less metabolic debt to clear means lighter legs the next morning.
More Movement
In an 8-week placebo-controlled study, weekly physical activity went up.
Imagine feeling less fatigued mid-workout — and less sore the next day.
The Problem
Push hard enough throughout your day and your muscles start producing lactic acid faster than your body can clear it. That's the drag that prevents you from going to the gym, the exhaustion that ends your evening early, the stairs that feel personal the next morning.
Caffeine can hide it. Buffers can delay it. Neither one removes it. The lactate is still there, waiting for you at the end of the day and at the start of the next one.
So we went looking for something that could actually eat your fatigue and turn it into fuel.
Hours actually spent moving, per week
Nobody was given a training plan. They simply found they had it in them — the day got easier, and the gym stopped being the thing that got dropped.Weekly physical-activity data from our 8-week placebo-controlled study. doi: https://doi.org/10.1101/2025.11.03.25339441
Start Unlocking It
One capsule a day. Skip, pause, or cancel anytime.
★★★★★
“My days no longer have the 3PM slump. I've been using VNella for 2 and a half months and my results have remained consistent throughout.”
★★★★★
“I wake up with more energy so I get better workouts in the morning and I'm not getting tired throughout the day. I'm 53 and have been dragging for a couple of years.”
★★★★★
“I have more energy and I walk into my workouts as excited and ready as ever… It allows me to keep up with my kids.”
Peer-reviewedNature Medicine, 2019: Veillonella discovered in elite runnersPreprint8-week placebo-controlled study: +2 hrs activity a weekFounder data180-day Oura tracking, n=1
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One-Time Purchase
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Billed $177 every 90 days. Skip, pause, or cancel anytime.
Recovery is a routine, not a one-time fix.
Why We're Different
And not to mention — the supplement aisle has thousands of products wearing forty labels. Here's why we stand out.
The 3pm crash
“Just have another coffee.”
What we'd say insteadWe all love a morning coffee — we're not telling you to cut it out. Just don't let it be the only thing holding your afternoon together. Caffeine borrows energy from later in the day and charges interest at 3pm. V·Nella doesn't borrow anything; it unlocks energy you already made.
The supplement aisle
“Proprietary blend. Trust us.”
What we'd say insteadMost shelves are stacked with concoctions that have never been tested as a finished product. We'll tell you exactly where ours came from — the gut microbiomes of elite athletes, isolated at Harvard — and we've run placebo-controlled clinical trials on it.
The energy drink
“More stimulants, more output.”
What we'd say insteadStimulants make you feel more capable while leaving you less recovered. There's no caffeine in V·Nella, nothing to build a tolerance to, and nothing that costs you the evening. One capsule, once a day.
The Evidence
Our CEO measured the effects of V·Nella and the results shocked us too. No training plan. No lifestyle overhaul. Just one capsule a day.
Oura · Cumulative stress
Cumulative stress is the load your body is carrying day to day. Across the same window it falls into the Low band and holds there rather than spiking back.
Oura · Resilience
Resilience is Oura's read on how well you bounce back from whatever a day throws at you. The line walks up through Adequate and Solid into Strong, and the app calls the state Thriving.
What this means for youBouncing back faster and less carried over from yesterday, so today costs less to get through.
Oura · Heart-rate variability
HRV is the number most people use as a recovery score. It had been drifting the wrong way for months. It reversed, and kept climbing.
What this means for youThe marker your ring grades you on, moving in the right direction.
N-of-1 study conducted over a 180-day period including baseline and supplementation. Additional clinical trial studies and publications can be found on our science page.
The Solution
Lactic acid isn't damage and it isn't waste. It's energy you already produced and then couldn't unlock — so it sits there as the burn that ends your session. V·Nella unlocks it.
Every hard effort makes lactic acid. It builds faster than you clear it, and that backlog is what your legs read as fatigue. Locked fuel, sitting in the tank.
Almost nothing in your gut eats lactic acid. Veillonella atypica lives on it. The by-product that caps you becomes the thing it feeds on — so it gets cleared instead of stockpiled.
What comes back is propionate — fuel your mitochondria burn directly. Mitochondria are the engines inside every cell. Give them more to work with and you get more out of the same effort.
Same workout. More available energy. Less of it left as burn.
Biology from elite athletes, translated at Harvard Medical School. Read the Nature Medicine paper →
Verified Reviews
Verified reviews from 200+ FitBiomics customers across Nella and V·Nella. Individual results vary.
“My days no longer have the 3PM slump. I've been using VNella for 2 and a half months and my results have remained consistent throughout.”
“Taking VNella feels like I just upgraded my own personal battery pack. I have more energy and I walk into my workouts as excited and ready as ever… It allows me to keep up with my kids.”
“I have felt a major difference since taking these probiotics — I sleep better, I recover faster, and feel more energetic during the day.”
“I wake up with more energy so I get better workouts in the morning and I'm not getting tired throughout the day. I'm 53 and have been dragging for a couple of years.”
“Significant increase in energy baseline, able to recover much more quickly after energy crashes.”
“I use it daily and I love it. I have never felt better. I turn 65 in September and I feel 50!”
What V·Nella Isn't
Three things this deliberately isn't, and one honest timeline for what it is.
× Not a stimulant
Nothing here speeds up your nervous system. No tolerance curve, and no dropping below baseline when you stop taking it.
× Not a post-workout product
One capsule daily, no timing window. Lactic acid is produced whenever your muscles work — so the mechanism is running on the session, the recovery, and the day you barely move at all.
× Not a commodity probiotic
Not a generic blend, and nothing hormonal — no hormones, no hormone precursors, nothing that acts on them. Just Veillonella atypica, doing one measurable thing: metabolizing lactate.
What To Expect
Days 1–10
Veillonella establishes in the gut. Subtle gut microbiome shifts occur. Not much to feel yet — the biology is priming.
Week 2
Lactate conversion begins. Users typically notice longer sustainable effort, slightly less burning at threshold. Recovery starts improving.
Week 3
Measurable improvements in time-to-exhaustion. Next-day soreness decreases. Training consistency improves as recovery becomes faster.
Week 4+
The change settles in. Getting through the day stops taking everything you have, and the walk, the class or the gym stops being the thing that gets dropped.
How V·Nella Works
Imagine a society where we are all more physically active — where stamina isn't a limit and recovery isn't a bottleneck. We are here to bring this concept to fruition through science.
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V·Nella™