IM8 vs AG1 (2026): An Honest, Science-Based Comparison

I've been in the wellness and biohacking space for 14 years. I've tried more all-in-one supplements than I can count, and most of them have been disappointing in one way or another — either the ingredients are underdosed, the forms are cheap, or the marketing far outpaces what the product actually does.

AG1 and IM8 are the two most talked-about products in this category right now. They're both premium-priced, both positioned as comprehensive daily foundations, and both have serious marketing machines behind them. But they're genuinely different products targeting different things — and understanding that difference matters before you spend $80–100 a month on either one.

I'm affiliated with IM8, so I'll be upfront about that. But I'm also going to be honest about what AG1 does well, because it earns some of its reputation. You deserve a real comparison, not a hit piece.

Here's what I actually think.

Before getting into ingredients, it helps to understand the underlying philosophy of each product.

AG1 launched in 2010 as a greens powder first. Its identity is rooted in whole-food-sourced plant nutrition — spirulina, chlorella, wheatgrass, adaptogens, enzymes, and probiotics. It's designed as a nutritional foundation, filling gaps from an imperfect diet. The core promise is: drink this instead of trying to eat perfectly every day.

IM8 launched later with a different brief: replace your entire supplement stack — not just your greens — in one drink. The formulation was engineered by a scientific advisory board from Mayo Clinic, NASA, Yale, and Cedars-Sinai with the explicit goal of covering 9 organ systems in a single serving. The most recent version, Daily Ultimate Essentials PRO (February 2026), adds saffron extract, upgrades to P5P (active B6), dramatically increases B12 to 200mcg methylcobalamin, and increases Vitamin D3, K2, magnesium, and MSM dosages — all at the same price.

These are different products with different ambitions. That shapes everything that follows.

This matters more than most people realize.

AG1's formula is divided into proprietary blends — the Raw Superfood Complex, Nutrient Dense Extracts & Herbs blend, Digestive Enzyme & Super Mushroom Complex, and Probiotic blend. This means you know what ingredients are in each blend but not in what amounts. You cannot verify whether the adaptogen doses are therapeutic or token inclusions.

IM8 discloses every ingredient and every dosage. No proprietary blends, no hidden amounts. This is a meaningful philosophical difference — you can actually evaluate what you're buying rather than trusting the label on faith.

For anyone who takes their supplementation seriously enough to research what they're taking, full label transparency is a baseline expectation. IM8 meets it. AG1 doesn't.

Both products have impressive names attached.

AG1's Scientific Advisory Board includes Dr. Andrew Huberman and Dr. Peter Attia — two of the most prominent science communicators in the health space. Their involvement has been central to AG1's credibility and marketing.

IM8's Scientific Advisory Board includes researchers and clinicians from Mayo Clinic, NASA, Cedars-Sinai, Yale University, and the University of Connecticut. The Chief Medical Officer, Dr. Dawn Mussallem, is a Mayo Clinic integrative oncologist and was named Chief Medical Officer of Fountain Life, which was designated Longevity Clinic of the Year 2025.

The distinction is between scientific communicators (AG1) and active research clinicians who designed the formula (IM8). Both are legitimate forms of credibility. But if the question is who actually developed the formulation, IM8's advisory board has direct clinical practice expertise in the specific areas the product targets.

AG1 is NSF Certified for Sport — one of the most rigorous independent certifications available, particularly relevant for athletes. This certification tests for banned substances and verifies manufacturing quality. It's a genuine differentiator and a meaningful trust signal.

IM8 third-party tests every ingredient and dosage and is NSF Certified, but does not currently hold the NSF Certified for Sport designation specifically. For competitive athletes subject to drug testing, this matters. For the general population, the practical difference is minimal.

Both products are vegan, gluten-free, and non-GMO.

AG1 costs $99 for a 30-day supply or $79 per month on subscription.

IM8 Daily Ultimate Essentials PRO is priced comparably on subscription, with the added context that the PRO upgrade — which significantly increased dosages and added saffron extract — came at no price increase.

The cost-per-supplement-replaced calculation matters here. IM8 is designed to replace up to 16 separate supplements including CoQ10, a probiotic, electrolytes, MSM, amino acids, and more. AG1 replaces a multivitamin, greens powder, and a basic probiotic. If you're already running a comprehensive supplement stack, IM8's consolidation math is more compelling.

Neither product is a scam. Both have real formulations, real certifications, and real science behind them. The "AG1 is just expensive marketing" take that circulates online undersells what it actually delivers. And the "IM8 is just celebrity-funded hype" take ignores that the formulation was genuinely engineered by serious scientists and has meaningful upgrades over both AG1 and the original IM8.

The real question is what you're trying to accomplish.

If you want a greens-forward nutritional foundation from a brand with a 15-year track record and NSF Sport certification — AG1 is a legitimate choice.

If you want to replace a comprehensive supplement stack with a single daily drink, prioritize bioactive ingredient forms, and want full dosage transparency — IM8 PRO is the stronger formula for that goal.

I use IM8. Not because I'm affiliated with them — I became affiliated because I already believed in it. The bioactive forms, the spore-based probiotic protocol, the CoQ10 at a real dose, and the full label transparency are what won me over. The PRO upgrade made an already solid product significantly better.

Disclosure: I'm affiliated with IM8 and receive a commission on purchases through my link. I've done my best to represent AG1 fairly in this comparison — I'd rather you make the right choice for your needs than make a purchase that isn't right for you.