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Nella is a precision probiotic formulated with novel bacterial strains identified from elite endurance athletes. Unlike generic probiotics made from decades old soil strains, Nella's strains were decoded from the gut microbiomes of elite ultra-marathon runners and proven in a randomized controlled trial to improve sleep quality, gut barrier integrity, immune function, and daily energy. Published in the Microbiome Journal, 2022.
V·Nella is a performance probiotic built around Veillonella atypica — the bacterial strain discovered in elite runners' microbiomes post-race. It metabolizes lactic acid produced during exercise and converts it into propionate, an additional aerobic energy source your muscles can use. The result: extended endurance, faster lactate clearance, and reduced post-workout soreness. Published in Nature Medicine, 2019.
The Health Bundle includes both Nella and V·Nella — one targeting the gut-immune-brain axis (sleep, digestion, immunity, energy) and one targeting the gut-muscle axis (endurance, lactate conversion, recovery). They work on different biological pathways and are designed to be taken together for complete gut-performance coverage. The bundle saves 22% vs. buying separately.
FitBiomics was co-founded by Dr. Jonathan Scheiman, PhD — the Harvard Medical School postdoctoral researcher who led the original 2019 Nature Medicine study identifying Veillonella atypica in elite marathon runners. The FitBiomics team is focused on fighting your fatigue and improving your sleep by unlocking the biology you have within.
Both Nella and V-Nella can be taken in the morning before breakfast with water. Consistently, take one capsule of each daily to experience the benefits.
Most Nella users report the first noticeable improvements in sleep quality within 10–14 days. Digestive improvements often begin within the first week. V·Nella users typically notice endurance and recovery improvements between weeks 3–4, as Veillonella colonization builds. Full clinical trial results were measured at 4 weeks of supplementation.
Yes — they are specifically designed to be taken together. They target completely different biological axes (gut-immune-brain vs. gut-muscle) and there are no interactions between them. Taking both is what the Health Bundle is for.
No. Unlike stimulant-based supplements that cause tolerance buildup, Nella and V·Nella work by establishing beneficial strains in your microbiome. Consistent daily use builds and maintains the effect. You do not need to cycle off.
Yes. Both products have been tested in IRB-approved clinical trials on healthy adult populations. The strains used are classified as safe (GRAS) and have no known adverse interactions. As with any supplement, consult your physician if you have a compromised immune system or are on immunosuppressive medications.
Yes. Both Nella and V·Nella are vegan, gluten-free, dairy-free, non-GMO, and free of artificial ingredients. Every batch is third-party tested for purity and potency.
Nella contains strains from the gut-immune axis identified in elite athlete microbiomes, specifically targeting butyrate production, gut barrier integrity, and immune modulation. V·Nella contains Veillonella atypica — the lactic-acid-metabolizing strain identified in Boston Marathon finishers and published in Nature Medicine. The full strain specifications are disclosed in the published clinical trial data.
Nella and V·Nella are generally compatible with most supplements and medications. They are not stimulants, do not affect drug metabolism pathways, and have no known interactions with common supplements (protein, creatine, vitamins). If you are on prescription antibiotics, wait until your course is complete before starting — antibiotics can disrupt probiotic colonization. Consult your doctor for specific medication concerns.
We offer a 30-day money-back guarantee. If you don't notice a measurable difference in sleep, digestion, or performance within 30 days, contact us at hello@fitbiomics.com for a full refund. No questions asked.
Subscriptions ship monthly and save you 22% vs. one-time purchases. You can skip, pause, or cancel any month — no commitment, no penalty. Manage your subscription at any time through your account portal or by emailing hello@fitbiomics.com.
Yes — free shipping is included on all subscription orders. One-time purchases qualify for free shipping on orders over $75.
Yes. Both products qualify as HSA and FSA eligible purchases as dietary supplements targeting specific health outcomes.
Join 40,000+ people who took the science seriously.
The Health Bundle gives you complete coverage — Nella for gut health, sleep, and immunity. V·Nella for endurance, lactate conversion, and recovery. Two capsules. Two biological axes. One daily protocol.