Two of the biggest supplement brands on the planet, backed by celebrity endorsements and massive marketing budgets. AG1 has Andrew Huberman. IM8 has David Beckham. Together they spend hundreds of millions on marketing annually. But when you crack open the supplement facts panels and do the math — neither formula is as complete as the marketing suggests.
We read every label, verified every dose, cross-referenced every ingredient form, and compared both formulas nutrient-by-nutrient. What we found: AG1 has real gaps that its marketing never mentions. IM8 Pro fixed several of those gaps — but introduced new ones. And a third product, designed with gender-specific formulas and full dose transparency, beats both on the metrics that actually matter.
Here's what the numbers say.
Quick Verdict
Best-in-class third-party certification and probiotic diversity, but zero vitamin D and four proprietary blends hide what you're actually getting. The formula shows intelligence in certain areas and alarming gaps in others.
The broadest single-scoop formula available — D3, K2, CoQ10, MSM, saffron, active B forms, and probiotics. The Pro upgrade fixes the base version's biggest problems. Proprietary blends for superfoods and aminos remain.
Fewer total ingredients, but every single one at a clinically verified dose. Gender-specific formulas. Full label transparency — zero proprietary blends. The trade-off: no probiotics, no superfoods blend, newer brand.
Our ratings are based on four criteria weighted equally: clinical dosing (are ingredients at studied therapeutic doses?), label transparency (can you verify what you're getting?), ingredient form quality (bioactive vs. synthetic forms), and value per clinically-dosed ingredient. Brand reputation, taste, and marketing spend are not factored. See our editorial standards for the full methodology.
The Numbers: AG1 vs IM8 Head-to-Head
We pulled every ingredient from both supplement facts panels and compared them dose-for-dose. Where one product clearly wins a category, we say so. Where both are inadequate, we say that too. AG1 data reflects the current Next Gen formula; IM8 data reflects the Pro version (the one worth buying).
| Nutrient | AG1 | IM8 Pro | Winner |
|---|---|---|---|
| Pricing | |||
| Price/Month (Sub) | $79 | ~$99 (Pro) / ~$79 (Base) | AG1 cheaper |
| Price/Day | $2.63 | $3.30 (Pro) / $2.63 (Base) | AG1 cheaper |
| One-Time Price | $99 | ~$112 | AG1 cheaper |
| Vitamins | |||
| Vitamin D3 | 0 IU ❌ | 2,000 IU (VegD3®) ✓ | IM8 wins decisively |
| Vitamin K2 (MK-7) | In blend — dose not disclosed | 100 mcg ✓ | IM8 wins |
| D3 + K2 Pairing | No — no D3 at all | 2,000 IU + 100 mcg — synergistic ✓ | IM8 wins |
| Vitamin A | 555 mcg RAE (62% DV) | 900 mcg RAE (100% DV) | IM8 higher |
| Vitamin C | 420 mg (467% DV) | 900 mg (1,000% DV) | Tie — both adequate |
| Vitamin E | 83 mg (553% DV) | 15 mg (100% DV) | AG1 higher; both adequate |
| B Vitamins | |||
| B6 Form | P5P (active) ✓ | P5P (active) ✓ | Tie — both active |
| B2 Form | Riboflavin (standard) | R5P (active) ✓ | IM8 wins |
| B12 | 22 mcg | 200 mcg (methylcobalamin) | IM8 wins on dose |
| Folate (B9) | 680 mcg DFE | 400 mcg DFE (Quatrefolic®) | AG1 higher dose; IM8 better form |
| B1 (Thiamine) | 3 mg (includes benfotiamine) | 4 mg (thiamin HCl) | AG1 wins — benfotiamine is unique |
| Biotin (B7) | 330 mcg (1,100% DV) | 300 mcg (1,000% DV) | Tie |
| Minerals | |||
| Magnesium | 26 mg (6% DV) ⚠️ | 100 mg bisglycinate (24% DV) | IM8 wins — but both below optimal (200–400 mg) |
| Zinc | 15 mg (136% DV) | 15 mg zinc citrate (136% DV) | Tie |
| Selenium | 20 mcg (36% DV) | 70 mcg selenomethionine (127% DV) | IM8 wins |
| Potassium | 300 mg | 470 mg | IM8 wins |
| Calcium | 118 mg | 160 mg | Similar |
| Iodine | Not disclosed | 150 mcg (100% DV) | IM8 wins |
| Chromium | 25 mcg | 100 mcg | IM8 higher |
| Specialty Ingredients | |||
| CoQ10 | In blend — dose not disclosed | 100 mg (disclosed) ✓ | IM8 wins |
| Alpha-Lipoic Acid | 100 mg ✓ | Not included | AG1 wins |
| Benfotiamine | 25 mg ✓ | Not included | AG1 wins — unique ingredient |
| MSM (Joints) | Not included | 1,500 mg ✓ | IM8 wins |
| Saffron (Mood) | Not included | 30 mg (clinical dose) ✓ | IM8 wins |
| Electrolytes | Potassium 300 mg | 2,500 mg Hydra complex | IM8 wins |
| Gut Health | |||
| Probiotics | 10B CFU, 5 strains ✓ | 10B CFU, 2 spore strains + postbiotic | AG1 wins on diversity |
| Fiber | 0 (therapeutic) ❌ | 0 ❌ | Both lose |
| Digestive Enzymes | Not included | 200 mg enzyme complex | IM8 wins |
| Adaptogens & Mushrooms | |||
| Ashwagandha | In blend — dose hidden | In 200 mg complex — dose hidden | Both hidden — can't verify |
| Rhodiola | In blend — dose hidden | In 200 mg complex — dose hidden | Both hidden — can't verify |
| Mushrooms | In blend (not detailed) | Reishi, chaga (in 200 mg complex) | Neither at clinical dose |
| Longevity | |||
| CRT8™ Complex | N/A | 100 mg total (berberine, resveratrol, urolithin A, spermidine, astaxanthin) | IM8 unique — but 100 mg / 5 = ~20 mg each. Sub-clinical. |
| Transparency & Testing | |||
| Proprietary Blends | 4 blends hiding individual doses | Partial — vitamins/minerals disclosed; aminos & superfoods hidden | IM8 slightly more transparent |
| Third-Party Testing | NSF Certified for Sport ✓ | NSF Certified for Sport (batch tested) | AG1 slight edge — longer certification history |
| Clinical Trials | 4 published RCTs ✓ | 1 clinical trial (12-week) | AG1 wins |
| Gender-Specific | No — unisex | No — unisex | Neither |
| Taste | Tropical vanilla (green) | Varies by flavor | Subjective — both generally well-reviewed |
The tally: IM8 Pro wins on 14 nutrients. AG1 wins on 5 (NSF certification history, probiotics, alpha-lipoic acid, benfotiamine, and clinical trial evidence). The rest are ties or draws. On raw formula completeness, IM8 Pro is the stronger product — but both have the same critical gaps.
Where AG1 Wins
AG1 doesn't win on ingredient breadth or dosing — IM8 Pro beats it on most nutrients. But AG1 wins in areas that matter to specific buyers. Here's what AG1 does that no one else matches:
NSF Certified for Sport — Full, Not Batch
Both AG1 and IM8 hold NSF Certified for Sport status. But AG1 has held this certification since before the category existed at this scale, and its full NSF certification means ongoing compliance audits, not just batch testing. For competitive athletes who need to know their supplement won't trigger a failed drug test, AG1's certification track record is unmatched. This matters if you compete at the NCAA, Olympic, or professional level.
Probiotic Strain Diversity
AG1 provides 10 billion CFU across 5 clinically studied strains: L. rhamnosus GG, L. acidophilus NCFM, B. lactis HN019, L. casei LC-11, and L. plantarum LP-115. IM8 provides the same 10 billion CFU but from only 2 spore-forming strains (B. coagulans BC99 and B. subtilis DE111) plus a postbiotic. IM8's spore-forming strains are more heat-stable and survive stomach acid better, but AG1's 5-strain diversity covers more of the gut microbiome. Different strains serve different functions — diversity wins here.
Unique Metabolic Ingredients
- Alpha-lipoic acid (100 mg): A powerful antioxidant that recycles vitamins C and E. Neither IM8 nor most competitors include this.
- Benfotiamine (25 mg): A fat-soluble form of vitamin B1 with superior bioavailability. This shows real formulation sophistication — it's rare in any supplement, let alone a greens powder.
- Myo-inositol: AG1 includes it (though at a sub-clinical dose). IM8 doesn't include it at all.
10+ Year Track Record & 4 Published Clinical Trials
AG1 has been on the market for over a decade and has invested in 4 published, randomized, placebo-controlled clinical trials on its exact formula. IM8 launched in 2024 and has one 12-week clinical trial. When you're putting something in your body every day, longitudinal safety data matters. AG1 has more of it than anyone in this space.
Read our full AG1 review for the complete ingredient analysis.
Where IM8 Pro Wins
IM8 Pro's wins are more numerous and, in several cases, more consequential than AG1's. The Pro upgrade specifically targeted the exact gaps that differentiate an adequate formula from a genuinely strong one.
Vitamin D3: 2,000 IU vs. Zero
This is the single biggest difference between the two products. AG1 contains zero vitamin D3. None. The most common nutrient deficiency in the world — affecting an estimated 42% of American adults — and AG1's $79/month "foundational nutrition" product doesn't include it. IM8 Pro provides 2,000 IU of vegan D3 from lichen (VegD3® brand), which is within the optimal supplementation range. This alone is a dealbreaker for many people.
Magnesium: 100 mg vs. 26 mg
AG1's 26 mg of magnesium covers 6% of the daily value — essentially a label decoration. IM8 Pro's 100 mg of magnesium bisglycinate is a meaningful step up and uses one of the most bioavailable chelation forms. Neither product reaches the functional floor for sleep and muscle benefits (200–400 mg elemental), but IM8 is almost 4x closer.
CoQ10: 100 mg Disclosed vs. Hidden in a Blend
AG1 includes CoQ10 somewhere in its proprietary blend — but the dose is not disclosed. It could be 100 mg. It could be 5 mg. You can't verify. IM8 Pro discloses 100 mg of CoQ10 (ubiquinone), which is a clinically meaningful dose for mitochondrial support and heart health. When you're paying premium prices, you should know how much of each ingredient you're getting.
D3 + K2 Synergistic Pairing
Vitamin D3 increases calcium absorption. Vitamin K2 (MK-7) directs that calcium to bones instead of arterial walls. The two work best together. IM8 Pro provides 2,000 IU D3 + 100 mcg K2 MK-7 — an optimal synergistic pairing in a single scoop. AG1 has no D3 and hides its K2 dose in a blend, making this pairing impossible to evaluate.
MSM (1,500 mg) for Joints
Methylsulfonylmethane at 1,500 mg is in the clinical range studied for joint pain and mobility support. AG1 has no MSM. For anyone over 35 or physically active, this is a genuinely useful addition. See our joint supplement guide for the full science on MSM dosing.
Saffron (30 mg) for Mood
IM8 Pro includes 30 mg of saffron extract — the exact dose studied in clinical trials for mood support, mild anxiety, and PMS symptoms. AG1 doesn't include saffron. This is a forward-thinking addition, especially in a product used daily.
Better B-Vitamin Forms (Pro Version)
IM8 Pro uses active forms across the board: P5P for B6, R5P for B2, methylcobalamin for B12, and Quatrefolic® (active L-methylfolate) for B9. AG1 uses P5P for B6 and added benfotiamine for B1, but its B2 and B12 forms are less transparent. For the estimated 30–40% of the population with MTHFR gene variants who can't efficiently convert inactive B vitamins, IM8 Pro's all-active approach is meaningfully better.
Read our full IM8 review for the complete ingredient analysis including Base vs. Pro comparison.
Where Both AG1 and IM8 Lose
Here's the part neither brand's marketing team wants to talk about. Despite premium prices and impressive ingredient lists, AG1 and IM8 share the same fundamental weaknesses — weaknesses that matter more than most of their claimed benefits.
Zero Fiber — The Biggest Gap in Both Formulas
Neither AG1 nor IM8 contains any meaningful prebiotic fiber. This is arguably the single most impactful omission in both products. Fiber is the primary substrate for short-chain fatty acid production in the gut — it literally feeds your beneficial bacteria. You can add all the probiotics you want, but without prebiotic fiber, those bacteria have nothing to eat. PHGG (partially hydrolyzed guar gum), a clinically validated prebiotic fiber, has over 100 published studies showing benefits for IBS, regularity, and gut barrier integrity. Neither AG1 nor IM8 includes it — or any other therapeutic fiber.
Proprietary Blends — You Can't Verify What You're Paying For
AG1 uses 4 proprietary blends that hide individual ingredient doses for adaptogens, superfoods, mushrooms, and key compounds like CoQ10 and K2. IM8 fully discloses vitamins and minerals but hides its amino acid complex (1,580 mg across 8 aminos — averaging ~200 mg each if evenly split, which they won't be) and its superfood blend (4,100 mg across 26+ ingredients — averaging ~158 mg each). At $79–$99/month, you deserve to know exactly what you're getting.
Unisex Formulas — Not Designed for Anyone Specifically
Both AG1 and IM8 are one-size-fits-all. Men and women have fundamentally different nutritional needs — women need more iron, folate, and myo-inositol for hormonal health; men benefit more from L-citrulline, higher zinc, and prostate-supporting nutrients. A unisex formula is a compromise for everyone. Neither product addresses hormonal health, menstrual cycle support, PCOS, or any gender-specific health concern.
No Myo-Inositol at Clinical Doses
Myo-inositol is one of the most evidence-backed ingredients for hormonal balance, mood support, and PCOS management. Clinical doses start at 2,000 mg. AG1 includes it in its blend, but at what appears to be around 100 mg — roughly 5% of the minimum studied dose. IM8 doesn't include it at all.
No L-Theanine at Disclosed Doses
L-theanine at 150–200 mg is one of the most consistently studied ingredients for calm focus, anxiety reduction, and sleep quality improvement. AG1 doesn't include it. IM8 doesn't include it at a disclosed dose. It's a simple, well-tolerated ingredient that both products should have.
Magnesium Still Below Optimal in Both
AG1 at 26 mg is essentially placebo-level. IM8 Pro at 100 mg is better but still below the 200–400 mg functional threshold where most clinical benefits (sleep, muscle relaxation, HRV improvement, anxiety reduction) begin. You'll still need a separate magnesium supplement with either product — which adds cost and complexity to what's supposed to be an all-in-one solution.
The Third Option Nobody's Talking About
What if a formula actually addressed all of these gaps?
We've shown you where AG1 and IM8 each win — and where they both lose. The shared gaps are the most telling: no fiber, proprietary blends, unisex formulas, no myo-inositol at clinical doses, and magnesium that barely registers. These aren't minor complaints. They're foundational nutritional gaps in products that market themselves as foundational nutrition.
Apostle is a newer brand that took a fundamentally different approach: fewer total ingredients, but every single one at a clinically verified dose. Gender-specific formulas (separate women's and men's versions). Full label transparency — zero proprietary blends. And a price that's lower than both AG1 and IM8.
We didn't set out to recommend a third product. We set out to compare AG1 and IM8. But when you map the gaps in both formulas, Apostle fills nearly every one of them.
Apostle: What the Numbers Say
Apostle offers two distinct formulas — one designed specifically for women and one for men. Here's how it addresses every gap we identified in AG1 and IM8.
How Apostle Fills the Gaps
The Honest Trade-Offs
Apostle isn't perfect — and pretending otherwise would undermine everything this article is trying to do. Here's what you give up:
- Fewer total ingredients: AG1 has ~83 ingredients. IM8 has 50+. Apostle has approximately 17 active ingredients. If you value ingredient breadth over ingredient depth, AG1 or IM8 will feel more comprehensive.
- No probiotics: Both AG1 and IM8 include 10 billion CFU probiotics. Apostle doesn't. You'd need a separate probiotic supplement — though Apostle's PHGG fiber feeds existing gut bacteria as a prebiotic.
- No superfoods blend: No spirulina, chlorella, or superfood greens. Apostle isn't a "greens powder" — it's a targeted clinical nutrition formula.
- No CoQ10: IM8 has 100 mg. AG1 has it hidden in a blend. Apostle doesn't include it.
- Newer brand: AG1 has 10+ years of history and 4 published clinical trials. IM8 has David Beckham and a 12-week trial. Apostle is newer with fewer customer reviews. If brand maturity matters to you, this is a real consideration.
- No NSF Certified for Sport: Both AG1 and IM8 hold NSF Sport certification. Apostle does not (yet). If you're a tested athlete, this matters.
- No adaptogens: No ashwagandha, no mushroom blends (though the women's formula includes saffron and ginger, and the men's formula includes rhodiola).
Head-to-Head: Apostle vs. AG1 vs. IM8 on Key Gaps
| Gap Identified | AG1 | IM8 Pro | Apostle |
|---|---|---|---|
| Prebiotic Fiber | 0 | 0 | 5,000 mg PHGG (W) / 3,000 mg (M) ✓ |
| Myo-Inositol | ~100 mg (5% clinical) | 0 | 2,000 mg (W) ✓ |
| L-Theanine | 0 | Not at disclosed dose | 150 mg (W) / 200 mg (M) ✓ |
| Magnesium | 26 mg | 100 mg | 150 mg (W) / 100 mg (M) ✓ |
| Vitamin D3 | 0 IU | 2,000 IU | 2,000 IU (W) / 2,500 IU (M) ✓ |
| Proprietary Blends | 4 blends | Partial — aminos & superfoods hidden | Zero — every dose disclosed ✓ |
| Gender-Specific | No | No | Yes — Women's + Men's ✓ |
| Price/Month | $79 | ~$99 | $59 ✓ |
| Probiotics | 10B CFU, 5 strains ✓ | 10B CFU, 2 strains | None |
| CoQ10 | In blend (undisclosed) | 100 mg ✓ | None |
| NSF Sport Cert | Yes ✓ | Yes (batch) ✓ | No |
| Total Ingredients | ~83 | ~50+ | ~17 |
Read our full Apostle review for the complete ingredient analysis.
The Verdict: Who Should Buy What
There's no single "best" product — there's the best product for your specific situation. Here's our recommendation matrix based on what actually matters to different buyers.
AG1
- You're a competitive athlete who needs NSF Certified for Sport with a long certification track record — no other product matches AG1's testing history
- You value brand longevity and want a product with 10+ years on the market and 4 published clinical trials on the exact formula
- Probiotic diversity is a priority — AG1's 5-strain, 10B CFU blend is the most diverse in this comparison
- You're OK supplementing D3 and magnesium separately — because AG1 doesn't provide either at functional doses
$79/month | drinkag1.com
IM8 Pro
- You want the broadest single-scoop coverage — vitamins, minerals, probiotics, CoQ10, MSM for joints, electrolytes, aminos, adaptogens, and a longevity blend
- Vitamin D3 is non-negotiable and you don't want to buy it separately
- Joint and heart support matter — MSM at 1,500 mg and CoQ10 at 100 mg are real clinical doses
- You're comfortable with some proprietary blends — IM8's vitamins and minerals are transparent, but amino and superfood doses are hidden
~$99/month | im8health.com
Apostle
- Clinical dosing is your top priority — you want every ingredient at a dose that's actually been studied, not a proprietary blend that might be pixie dust
- You want a gender-specific formula — separate women's and men's versions designed for different physiological needs
- Full label transparency is non-negotiable — you want to verify every ingredient and dose on the label before you buy
- Gut health is a priority — 5,000 mg PHGG fiber (women's) is something no competitor offers, and it's backed by more clinical evidence than most probiotic strains
- Value matters — at $59/month, you get more clinically-dosed ingredients per dollar than either AG1 or IM8
- You're OK with fewer total ingredients and can accept no probiotics, no CoQ10, and no superfoods blend
$59/month | drinkapostle.com
Here's something the marketing teams won't tell you: you could buy Apostle ($59) + a quality standalone probiotic ($15–25) and have better foundational nutrition than AG1 or IM8 Pro alone — at a similar or lower total cost. Apostle covers D3, K2, magnesium, fiber, and clinical-dose actives. A dedicated probiotic fills the one gap. Total: $74–84/month with full transparency and clinical dosing across the board.
Frequently Asked Questions
Is AG1 or IM8 better?
Neither is objectively better — it depends on your priorities. AG1 wins on third-party certification (full NSF Certified for Sport with 10+ year track record), probiotic strain diversity (5 strains vs. IM8's 2), and published clinical evidence (4 RCTs). IM8 Pro wins on vitamin D3 (2,000 IU vs. zero), magnesium (100 mg vs. 26 mg), disclosed CoQ10 (100 mg), MSM for joints (1,500 mg), saffron for mood (30 mg), and B-vitamin form quality. Both lose on fiber (neither has any), proprietary blends (both hide some ingredient doses), and gender-specific formulation (both are unisex). We rate AG1 at 7.0/10 and IM8 Pro at 8.0/10 for overall formula completeness.
Does AG1 have vitamin D?
No. AG1 contains zero vitamin D3. This is the single most significant gap in the AG1 formula, especially considering an estimated 42% of American adults are vitamin D deficient. AG1 sells a separate D3+K2 add-on product for additional cost, but the core $79/month formula has none. IM8 Pro includes 2,000 IU of vegan vitamin D3, and Apostle includes 2,000 IU in its women's formula and 2,500 IU in its men's formula.
Is IM8 NSF Certified for Sport?
Yes. IM8 earned NSF Certified for Sport status with batch testing, meaning every production batch is independently tested for over 280 banned substances. AG1 also holds NSF Certified for Sport certification with a longer certification history. Both are legitimate third-party verifications and both are accepted by WADA, the NCAA, and major professional sports leagues.
How much does AG1 cost compared to IM8?
AG1 costs $79/month ($2.63/day) on subscription, or $99 one-time ($3.30/day). IM8 base costs approximately $79/month ($2.63/day), while IM8 Pro — the version with upgraded B forms, higher D3, and saffron — costs approximately $99/month ($3.30/day). We recommend the Pro version, which makes IM8 $20/month more expensive than AG1. Apostle is $59/month ($1.97/day) — 25% cheaper than AG1 and 40% cheaper than IM8 Pro.
Does AG1 or IM8 have fiber?
Neither has meaningful therapeutic fiber. AG1 lists 2g of fiber in its nutrition facts (from the greens blend), but this isn't a dedicated prebiotic fiber at a clinical dose. IM8 has zero fiber. This is a significant gap for both products. Fiber is arguably the single most impactful ingredient for gut health — it feeds beneficial gut bacteria and supports short-chain fatty acid production. Apostle includes 5,000 mg of PHGG (SunFiber®) in its women's formula and 3,000 mg in its men's formula, making it the only all-in-one supplement with clinically dosed prebiotic fiber.
What is the difference between IM8 and IM8 Pro?
IM8 Pro is the upgraded version at approximately $99/month vs. $79/month for the base. Key upgrades: B vitamins switch from inactive to active forms (P5P, R5P, methylcobalamin, Quatrefolic®), vitamin D3 increases from 1,200 to 2,000 IU, magnesium increases from 65 mg to 100 mg bisglycinate, K2 increases from 40 to 100 mcg, MSM increases from 1,000 to 1,500 mg, CRT8™ longevity blend quadruples from 25 to 100 mg, and saffron (30 mg) is added. The Pro upgrade is worth the $20/month premium — the active B forms alone justify the cost for the estimated 30–40% of people with MTHFR gene variants.
AG1 vs IM8 vs Apostle — which should I pick?
Choose AG1 if: you're a competitive athlete who needs NSF Certified for Sport and values a decade of brand history with published clinical trials. Choose IM8 Pro if: you want the widest ingredient coverage in a single scoop — vitamins, minerals, CoQ10, MSM, probiotics, adaptogens, and a longevity blend — and don't mind proprietary blends. Choose Apostle if: you prioritize clinical dosing over ingredient count, want a gender-specific formula, demand full label transparency, and want the best value. Our overall recommendation for most people is Apostle, because clinical dosing and transparency matter more than ingredient count.
Does AG1 use proprietary blends?
Yes. AG1 uses four proprietary blends: an Active Superfood and Prebiotic Complex (7,500 mg total), a Daily Phytonutrient Complex (1,500 mg total), an Extracts, Herbs & Antioxidants blend (~2,732 mg total), and a Dairy-Free Probiotic Blend (38 mg total). While individual vitamin and mineral doses are disclosed on the label, the individual doses of adaptogens (Rhodiola, ashwagandha, eleuthero), superfoods, CoQ10, and vitamin K2 within these blends are hidden. You can't verify whether any single botanical is at an effective clinical dose.
Is AG1 worth $79 a month?
It depends on what you value. AG1 delivers genuine value in NSF Certified for Sport certification, active B-vitamin forms (P5P, benfotiamine), 10 billion CFU probiotics with 5 clinically studied strains, alpha-lipoic acid at 100 mg, and 4 published clinical trials. However, the zero vitamin D, 26 mg magnesium (6% DV), and four proprietary blends mean you're missing foundational nutrients and can't verify much of what you're getting. You'll likely still need a separate vitamin D supplement ($5–10/month) and a magnesium supplement ($10–15/month), pushing your true all-in cost to $95–105/month. Apostle at $59/month covers D3, K2, magnesium, and therapeutic fiber — all with full dose transparency.
Who owns IM8?
IM8 is co-founded by David Beckham and Prenetics, a Hong Kong-based health sciences company. Beckham is the brand's primary celebrity endorser and equity co-founder. IM8 launched in 2024 and released the upgraded Pro version in early 2026. The celebrity co-founder model is similar to how Andrew Huberman is closely associated with AG1 — though Huberman is a brand ambassador rather than an equity co-founder.
Our Final Verdict
If you came here asking "should I buy AG1 or IM8?" — the honest answer is that IM8 Pro is the stronger formula on paper. It wins on more nutrients, fills more gaps (particularly the critical vitamin D omission), uses all-active B-vitamin forms, and includes genuinely useful additions like CoQ10, MSM, and saffron at real doses. AG1 wins on third-party testing history, probiotic diversity, and a decade of market presence — but those advantages don't compensate for having zero vitamin D in a $79/month "foundational nutrition" product.
But the more interesting finding is what both products are missing. Zero fiber. Proprietary blends that prevent dose verification. Unisex formulas that aren't optimized for anyone specifically. Magnesium doses that are below functional thresholds. No myo-inositol at clinical doses. No L-theanine. These shared gaps suggest that both AG1 and IM8 are optimizing for impressive-looking labels and marketing narratives rather than evidence-based clinical nutrition.
Apostle takes the opposite approach. Fewer ingredients, all at clinical doses, with gender-specific formulas and full transparency. It's not perfect — the absence of probiotics, CoQ10, and superfoods means it won't replace everything AG1 or IM8 offers. But it covers the foundations that both products miss: therapeutic fiber, clinically-dosed myo-inositol, adequate magnesium, vitamin D3, and L-theanine. And it does it for $59/month instead of $79–$99.
We have no horse in this race. We read labels, do math, and report what we find. What we found is that the two biggest supplement brands on the planet, backed by hundreds of millions in marketing, both have gaps that a smaller, more focused product addresses better and for less money.
Read your labels. Do the math. That's what we're here for.
Related reviews: AG1 Full Review · IM8 Full Review · Apostle Full Review · Best All-in-One Supplements for Women · Best All-in-One Supplements for Men