Tmrw vs AG1: Honest Comparison Review (2026)
Something's changing in how people think about daily health, and it starts with asking better questions: Not "What can I take to feel better today?" but "What supports my body's ability to perform, repair, and adapt over the long term?
This shift explains why foundational supplements have moved beyond basic multivitamins and greens powders. The most forward-thinking formulas are now addressing the 12 hallmarks of aging - the cellular and systemic processes that determine how well your body functions today and how resilient it remains over time.
This is where all-in-one foundational formulations claim to shine. But despite similar marketing language, AG1 and Tmrw are not built the same. Their ingredient strategies, dosing principles, and scientific frameworks reflect completely different philosophies of what “foundational health” actually means.
If you’ve ever wondered which formula delivers the most complete, science-aligned daily support, this breakdown reveals where each one stands - and why the differences matter more than most people realize.
Foundational Nutrition: What Should It Actually Achieve?
Before comparing brands, it’s important to understand what a foundational supplement should provide. A true all-in-one daily formula isn’t meant to simply fill micronutrient gaps, it should support the underlying systems that influence how well you function day to day and how resilient your body remains over time.
A complete foundational formula supports:
- Daily micronutrient balance
- Gut health and digestive comfort
- Cellular energy output
- Longevity systems support (cellular renewal + resilience)
- Detoxification pathways
- Stress response and mental clarity
- Inflammation balance
- Long-term biological repair processes
AG1 addresses parts of this list. Tmrw addresses all of it.
Ingredient Philosophy
Here’s how each brand approaches formulation at the highest level:
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Already, the gap begins to show: Tmrw is engineered with a completely different purpose.
AG1: Broad Coverage With Limited Specificity
AG1 is built on a legacy greens-based template: lots of plants, large blends, and a generalist wellness approach. It’s effective for broad nutritional insurance, but it lacks targeted depth.
Where AG1 succeeds:
- Strong greens profile
- Basic gut support with probiotics and enzymes
- Essential vitamins and minerals
- Easy daily routine
Where AG1 falls short:
- No NMN, CaAKG, Spermidine, Urolithin A, Fisetin, TMG
- Heavy reliance on proprietary blends
- Stevia aftertaste
- No longevity or mitochondrial framework
Tmrw: Built Backwards From Cellular Science
Tmrw begins with the question: “Which cellular pathways most influence long-term resilience and biological performance?”. From there, the formula is engineered using compounds validated in human research, with doses clear and clinically aligned.
What Tmrw includes:
- 35+ longevity compounds
- 10 probiotic strains
- Activated B-vitamins
- Detox botanicals
- Mitochondrial cofactors and NAD+ boosters
- Adaptogen + nootropic support
- Full dosing transparency
- NSF-certified manufacturing
Instead of trying to be a greens drink with extras, Tmrw is built as a complete longevity foundation for modern biology, the first of its kind.
Longevity & Cellular Support
This is the category where AG1 falls furthest behind, and where Tmrw becomes the clear leader. Here’s a simple snapshot:
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Longevity is no longer niche science, it’s where the future of foundational health is heading. Ingredients like NMN, CaAKG, spermidine, and urolithin A are increasingly researched for their roles in cellular energy, mitochondrial efficiency, detox balance, and long-term biological resilience. These pathways influence how well the body repairs itself, responds to stress, and maintains vitality over time.
NAD+ levels drop as we age, and can be less than 50% by the time we hit 50. Tmrw’s carefully selected ingredients that support NAD+ levels get ahead of this real decline.
The real difference lies in how this science is applied. AG1 isn’t built around longevity actives, while Tmrw is engineered as a single, integrated daily system, bringing longevity science, gut support, and foundational nutrition together in one clearly dosed routine.
Gut Health & Digestive Support
Both brands include probiotics, but quality, diversity, and transparency differ drastically.
AG1
- Probiotics & enzymes included
- Dosing hidden in blends
- Unclear strain diversity
Tmrw
- 10 clinically studied strains
- 10B CFU total
- Prebiotics + digestive enzymes
- Botanicals supporting gut lining & digestion
Beyond digestion, gut diversity plays a role in mood, inflammation balance, and metabolic signaling. This is why Tmrw prioritizes strain variety rather than just CFU volume. A diverse microbiome offers more robust, long-term support across the body’s interconnected systems.
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Taste & Daily Experience
Taste determines compliance, and compliance determines results.
AG1: Noticeable stevia aftertaste
Tmrw: Sweetened with thaumatin for a clean, subtle, long-term-friendly flavor
Thaumatin avoids the bitterness, metallic notes that is often described as tasting “medicinal”, and digestive sensitivity stevia often causes over time, an important consideration for a product meant to be used daily for years.
Clinical Dosing Reality Check
Many all-in-one formulas tout impressive ingredient lists, but "pixie dusting" - tiny, ineffective doses - undermines real results. Proprietary blends exacerbate this, lumping actives into low total mg groups to pad labels without therapeutic impact. Here's how AG1 stacks up against clinical evidence, with Tmrw's precision doses for contrast.
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Ingredient Considerations: How AG1 and Tmrw Differ
All-in-one formulas often contain similar categories of ingredients, but the levels and types chosen can carry different considerations depending on the individual.
Below is a breakdown of key differences:
Vitamin B12
- AG1: 400mcg
- Tmrw: 100mcg
High-dose vitamin B12 supplementation has been reported in the clinical literature to trigger acneiform eruptions in some individuals, particularly with higher dosing and extended use.
Tmrw keeps B12 at 100mcg, a measured daily level designed to support baseline function without pushing B12 as a headline dose.
Licorice Root (Blood Pressure Consideration)
- AG1: Includes licorice root
- Tmrw: Does not include licorice root
Licorice root containing glycyrrhizin has been associated with increases in blood pressure and reductions in potassium levels in some individuals, particularly at higher intakes or with prolonged use.
Tmrw does not include licorice root in its daily formula.
Probiotic Strategy
- AG1: 5 strains, 10 billion CFU
- Tmrw: 9 strains + 1 spore strain, 10 billion CFU
Same CFU count, but Tmrw delivers twice the strain diversity. Different probiotic strains serve different functions across the gut microbiome: broader strain coverage means a more comprehensive approach.
Tmrw's blend spans Lactobacillus, Bifidobacterium, and Streptococcus families, plus Bacillus subtilis BS31, a spore-forming strain well-documented for its stability through the digestive tract. AG1 covers the fundamentals. Tmrw goes further.
The B6 Form Problem
AG1 lists Vitamin B6 as Pyridoxine HCl at 3mg, 176% of daily value.
Pyridoxine HCl is a synthetic precursor that requires enzymatic conversion before your body can use it. At typical dietary levels this process works as intended. The concern arises with daily long-term supplementation: at higher intakes, the conversion pathway can become saturated, and unconverted pyridoxine accumulates in neural tissue where it interferes with nerve signalling, a condition known as B6-induced peripheral neuropathy.¹
The Australian Therapeutic Goods Administration (TGA) has explicitly stated that peripheral neuropathy can occur at doses less than 50mg, and has noted "no minimum dose, duration of use or specific patient risk factors" have been identified as a safe threshold.² In response, the TGA now requires warning labels on any product delivering more than 10mg of vitamin B6 per day, and is moving higher-dose pyridoxine products out of general retail entirely.³
At 3mg, AG1's dose sits below the TGA's current warning threshold. However, the TGA's own position is that risk cannot be excluded at doses below 50mg, particularly when consumers are taking multiple products containing B6 simultaneously. The published mechanistic research also identifies Pyridoxine HCl specifically, not other B6 forms, as the driver of neurotoxicity due to its competitive inhibition of PLP-dependent enzymes in neural tissue.¹
The safer alternative is well established. Research explicitly recommends *"PLP-based supplements are preferred over pyridoxine supplements because of minimal neurotoxicity observed in neuronal cell viability tests."⁴
Tmrw uses 2.5mg of B6 exclusively as P-5-P (Pyridoxal-5-phosphate Monohydrate), the bioactive coenzyme form the body recognises immediately. No conversion required. No accumulation pathway.
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AG1's Lead Problem: What You Should Know
When a product is taken daily, safety isn’t just about individual ingredients, it’s about long-term exposure over time.
Trace amounts of heavy metals like lead, cadmium, and arsenic can be present in raw materials. While these may be low on a single serving basis, consistency of use makes testing standards and transparency critical.
Independent, third-party testing plays an important role in verifying what’s actually present in a product beyond what’s listed on the label.
Below is a recent update from ConsumerLab, an independent testing organisation, highlighting findings from their analysis of AG1.
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Independent testing has raised further red flags. An external, independent analysis found that AG1 contained 9× higher lead levels than acceptable benchmarks, alongside detectable mercury and cadmium.
This combination matters: heavy metals accumulate silently with daily use, and when paired with undisclosed flavor compounds, they introduce unnecessary toxic load into a product marketed for long-term, everyday health.
Tmrw holds NSF Certified for Sport certification, one of the most rigorous independent quality standards in the supplement industry. Our full Certificate of Analysis and NSF certification reports are published directly on this page, so you can verify exactly what is and isn't in every scoop.
Price and Value
Tmrw is the clear value winner because it delivers full-spectrum, one-scoop coverage at USD $89/month on subscription. AG1 is cheaper at USD $79/month, but it’s also the no-frills greens play, priced like a basic foundation (and travel packs typically cost more)
AG1 is the entry point, not the endpoint, and the price doesn’t reflect that. Without NMN, CaAKG, or a longevity layer, it’s a premium tag on a basic greens formula.
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Taste
AG1: Started with its familiar sweet pineapple-vanilla base and, as of mid-2025, expanded into Tropical, Citrus, and Berry variants. Even with more flavors, Reddit users report an artificial tasting, especially around the newer Next Gen formula.
Tmrw: Designed for lifelong daily compliance, and sweetened with thaumatin (katemfe fruit) and real berries and pineapple from New Zealand farms for a clean finish. The flavor is naturally refreshing with subtly sweet blueberry + pineapple (berry/tropical notes), naturally coloured with blue spirulina + butterfly pea, and stays smooth and easy to enjoy every day with cold water.
Welcome Kit: Everything You Need to Get Started
When you subscribe to Tmrw, you’re not just getting a month’s supply of nutrient-dense longevity blend. Your first order comes with a Welcome Kit designed to make your daily ritual seamless and enjoyable, at no extra charge.
- Tmrw Shaker, Scoop & Cannister: Normally priced at $36, these essentials are included for free. The shaker makes mixing your drink effortless; the custom scoop ensures perfect portions; and the cannister keeps your formula fresh and organized on your counter.
- Tmrw Travel Sachets (3 ct): Valued at $11 and also free, these single‑serving sachets tuck easily into your bag so you never miss a serving when you’re on the go. You can buy top-up travel sachets on the members store if you prefer the sachets.
Your subscription ships every four weeks, so there’s always a fresh pouch of Tmrw ready when you need it. With the Welcome Kit, you have everything you need to start your healthy aging routine and stay consistent, whether at home or traveling.
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Final Verdict: Which One Wins?
AG1 delivers solid basic wellness - greens coverage and simple nutrition insurance. But it falls short on longevity actives (zero NMN or CaAKG), carries lead contamination risks (2.1-4.5mcg per scoop), and uses the neuropathy-prone B6 form.
Tmrw operates in a different league entirely. This precision longevity system fuses foundational nutrition, 10-strain gut support, detox pathways, mitochondrial power, inflammation balance, and 35+ clinically dosed cellular actives, all in one clean scoop. No stevia aftertaste, no heavy metals (NSF-certified), no potential side effects from cheap B6 alternatives (just 2.5mg P-5-P). It's engineered not just for today's energy, but for how your body performs, repairs, and stays resilient over decades.
So, need basic greens? AG1 suffices. Crave future-proof health without the hidden dangers? Tmrw redefines what's possible.
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Works Cited
- Hadtstein & Vrolijk, "Vitamin B6-Induced Neuropathy: Exploring the Mechanisms of Pyridoxine Toxicity" (2021), https://pmc.ncbi.nlm.nih.gov/articles/PMC8483950/
- TGA Safety Update, "Peripheral neuropathy with supplementary vitamin B6" (2022), https://www.tga.gov.au/news/safety-updates/medicines-containing-vitamin-b6-pyridoxine-pyridoxal-or-pyridoxamine
- TGA Media Release, "Stronger safety controls to be introduced for products containing vitamin B6" (2025), https://www.tga.gov.au/news/media-releases/stronger-safety-controls-be-introduced-products-containing-vitamin-b6
- Expert Consensus on Vitamin B6 Therapeutic Use (2025) , https://pmc.ncbi.nlm.nih.gov/articles/PMC12090844/
- AG1 Lead Testing and Safety Concerns - ConsumerLab, accessed January 30, 2026, https://www.consumerlab.com/answers/athletic-greens-ag1-is-it-worth-it/athletic-greens-ag1/
- AG1 Ingredients Analysis - AG1 Product Detail, accessed January 30, 2026, https://drinkag1.com/products/greens-powder-pouch
- B6-Induced Peripheral Neuropathy Risks, accessed January 30, 2026, https://pmc.ncbi.nlm.nih.gov/articles/PMC8483950/
- CaAKG Biological Age Reduction Trial, accessed January 30, 2026, https://clinicaltrials.gov/study/NCT07114536
- CoQ10 Q-SYMBIO Trial Heart Failure Results, accessed January 30, 2026, https://pmc.ncbi.nlm.nih.gov/articles/PMC10811087/
- Fisetin Senolytic Benefits Study, accessed January 30, 2026, https://www.nad.com/news/fisetin-fights-frailty-new-study-shows-supplment-preserves-strength
- NMN Dosage RCTs for NAD+ Boost, accessed January 30, 2026, https://www.frontiersin.org/journals/aging/articles/10.3389/fragi.2022.851698/full
- Spermidine Autophagy Benefits Review, accessed January 30, 2026, https://www.aging-us.com/article/101354/text
- AG1 Next Gen Taste Complaints - Reddit, accessed January 30, 2026, https://www.reddit.com/r/AthleticGreens/comments/1hnr0q3/notice_a_change_in_taste_as_of_late/
- AG1 Taste Feedback - Reddit, accessed January 30, 2026, https://www.reddit.com/r/KaraAndNate/comments/1f1n2zw/theres_no_way_ag1_taste_good/
- Total, Dietary, and Supplemental Vitamin C Intake and Risk of Incident Kidney Stones, accessed January 30, 2026, https://pmc.ncbi.nlm.nih.gov/articles/PMC4769668/#:~:text=Two%20previous%20epidemiologic%20studies%20have,3%2C12%2C15
- Vitamin B12 modulates the transcriptome of the skin microbiota in acne pathogenesis, https://pmc.ncbi.nlm.nih.gov/articles/PMC6049814/
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A low dose of daily licorice intake affects renin, aldosterone, and home blood pressure in a randomized crossover trial, https://www.sciencedirect.com/science/article/pii/S0002916524000194