AG1 (formerly Athletic Greens) is the most marketed supplement on the internet. Huberman, Attia, Rogan, and half of YouTube's fitness creators are paid to promote it. At $79/month subscription (one-time purchase was $99 when we last checked in March 2026), it promises to replace your multivitamin, greens powder, probiotic, and adaptogen stack in one scoop. We put it through our 6 proposition value scoring system and compared it head-to-head against building your own Foundation Stack. Here's the honest verdict.
AG1 Next Gen is a convenient, well-manufactured, NSF Certified for Sport greens powder with 75+ ingredients. However, it uses proprietary blends that hide individual doses, contains vitamins in amounts that often far exceed the RDA (meaning you'll excrete the excess), and costs $79/month, nearly the same as building a targeted Foundation Stack ($74/month) that addresses your specific needs with clinically effective doses of each ingredient. For most people, the Foundation Stack is a better investment. AG1 is best suited for athletes with high nutrient demands, frequent travelers who can't maintain a supplement routine, or people who simply won't take multiple pills and need one-scoop convenience.
What is AG1 Next Gen?
AG1 Next Gen (the reformulation AG1 launched on 1 May 2025, per AG1's announcement) is a powdered daily supplement containing 75+ vitamins, minerals, probiotics, prebiotics, digestive enzymes, adaptogens, and superfood extracts. You mix one 13g scoop into 8 to 10oz of cold water and drink it, ideally on an empty stomach before breakfast. It's NSF Certified for Sport, manufactured in New Zealand under GMP standards, and backed by a 90-day money-back guarantee.
The Next Gen formula moved to five clinically studied probiotic strains (L. rhamnosus GG, L. acidophilus NCFM, B. lactis HN019, L. casei LC-11 and L. plantarum LP-115) at 10 billion CFU, added a methylated B complex and "new and increased vitamins and minerals," and improved the taste with a light pineapple and vanilla note. Solubility has improved significantly.
AG1 has started publishing its trials. The first peer-reviewed one, an AG1-funded crossover trial in 16 healthy adults, found a single 13g serving significantly raised blood levels of most measured nutrients (folate, calcium, zinc, vitamin C, biotin and several B vitamins) over 8 hours versus placebo, with pyridoxine the exception (Sapp et al., 2026). That shows the nutrients are absorbed; it does not yet show health outcomes.
AG1 proposition value scores
AG1 vs. the Foundation Stack: head-to-head cost comparison
This is the comparison AG1's marketing doesn't want you to see. Let's stack $79/month of AG1 against $74/month of our Foundation Stack:
| Nutrient | AG1 Next Gen | Foundation Stack | Winner |
|---|---|---|---|
| Magnesium | 30mg as dimagnesium malate and magnesium glycinate (7% DV) | 300mg glycinate (Transparent Labs) | Foundation |
| Vitamin D3 | None in the formula (AG sells a separate D3+K2 drop); 90mcg K2 as MK-7 | 62.5mcg (2,500 IU) + K2 100mcg | Foundation (has D3) |
| Omega-3 | Not included | 1,280mg EPA+DHA (Nordic Naturals) | Foundation |
| Creatine | Not included | 5g monohydrate (Thorne) | Foundation |
| Probiotics | 10 billion CFU (5 strains) | Not included (add ~$15/mo) | AG1 |
| Greens/superfoods | 7.5g superfood and prebiotic complex + 1.5g phytonutrient complex | Not included | AG1 |
| Adaptogens | Ashwagandha, rhodiola (doses unknown) | Not included (add via Mood Stack) | AG1 (convenience) |
| B vitamins | 80% to 16,667% of DV (B12 alone is 400mcg; NIH set no UL for B12 because of its low potential for toxicity) | Multivitamin covers 100% DV | Tie (AG1 over-doses) |
| Cost | $79/month | $74/month | Foundation |
| Convenience | 1 scoop | 5-6 pills/capsules | AG1 |
AG1 Pro changes the maths slightly. As of October 2026, AG1's own site lists Next Gen at $79 a month ($2.63 a serving), AG1 Pro at $99 a month ($3.30 a serving) and AG1 Essentials Gummies at $49 a month ($1.63 a serving) (drinkag1.com). AG1 Pro (launched June 2026) bolts 5g of creatine monohydrate, calcium HMB and zinc carnosine onto the Next Gen formula, which closes one of the four gaps in this table (AG1), though at $99 a month it costs $25 more than the $74 Foundation Stack, which already includes creatine. Omega-3, vitamin D and a meaningful magnesium dose are still on you.
The takeaway: The Foundation Stack provides clinically effective doses of the 4 most important supplements (magnesium, D3+K2, omega-3, creatine), none of which AG1 includes at meaningful levels or at all. AG1 wins on probiotics, greens, and convenience. If you value convenience above targeted efficacy, AG1 makes sense. If you want to actually move the needle on specific health outcomes, the Foundation Stack is the better $74-79/month investment.
Who AG1 is actually good for
Athletes in tested sports: The NSF Certified for Sport testing is genuinely valuable. If you're a professional or collegiate athlete who needs certified supplements, AG1 is one of the safest all-in-one options.
Frequent travelers: The travel packs are convenient. Carrying 5 individual supplement bottles while traveling is a pain. One AG1 packet per day solves this.
People who won't take pills: If the alternative to AG1 is taking nothing at all, then AG1 is absolutely better than nothing. One scoop covers basic vitamin/mineral needs plus probiotics.
Everyone else: Build the Foundation Stack instead. You'll get clinically effective doses of the supplements that actually matter most, for the same price or less.
Safety notes before you subscribe
On warfarin? AG1 Next Gen contains 90mcg of vitamin K2. NIH says people taking warfarin and similar anticoagulants need to keep their vitamin K intake consistent, because sudden changes can raise or lower the drug's effect (NIH ODS). Starting or stopping a daily scoop is exactly that kind of change, so talk to whoever manages your INR first.
The adaptogen blend includes ashwagandha. NCCIH notes rare cases linking ashwagandha supplements to liver injury, says it should be avoided during pregnancy and while breastfeeding, and does not recommend it before surgery or for people with autoimmune or thyroid disorders (NCCIH). Because AG1 does not disclose the dose inside its blend, those cautions apply in full.
Do not double up. Stacking AG1 on top of a separate multivitamin multiplies its B vitamins and its 20mg of zinc. NIH set no upper limit for B12, but the combination adds little except cost.
Sources
- AG1. AG1 Next Gen product page and Supplement Facts. Accessed 19 October 2026.
- AG1 via PR Newswire. AG1 releases latest upgrade of its daily health drink (1 May 2025). Accessed 19 October 2026.
- AG1 via PR Newswire. AG1 launches AG1 Pro with creatine (8 June 2026). Accessed 19 October 2026.
- Sapp PA et al. Absorption kinetics of vitamins and minerals from a novel nutritional product in physically active adults. Front Nutr. 2026. Accessed 19 October 2026.
- NIH Office of Dietary Supplements. Vitamin K: Fact Sheet for Health Professionals. Accessed 19 October 2026.
- NIH Office of Dietary Supplements. Vitamin A and Carotenoids: Fact Sheet for Health Professionals. Accessed 19 October 2026.
- NIH Office of Dietary Supplements. Vitamin B12: Fact Sheet for Health Professionals. Accessed 19 October 2026.
- NCCIH. Ashwagandha. Accessed 19 October 2026.
- AG1. Homepage product grid: AG1 Next Gen, AG1 Pro and AG1 Essentials Gummies prices. Accessed 19 October 2026.
Bottom line
AG1 is a well-made, safe, convenient product that's marketed brilliantly and priced aggressively. At $79/month, it's not a scam, but it's not optimal either. The proprietary blends prevent you from knowing whether individual ingredients are at effective doses. It misses the two most impactful supplements entirely (omega-3 and creatine), though since June 2026 AG1 sells AG1 Pro, which adds 5g of creatine monohydrate to the Next Gen formula (AG1). And the excess water-soluble vitamins are, as one dietitian bluntly put it, "expensive urine." For most Health Britannica readers, the Foundation Stack at $74/month delivers more targeted, evidence-backed supplementation. But if convenience is your #1 priority, AG1 with its 90-day money-back guarantee is a low-risk way to establish a daily supplement habit.
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