IM8 Review: What's Behind David Beckham's Supplement

Quick Verdict

What Is IM8?

IM8 (pronounced "I'm eight" or "I-M-8") is a comprehensive all-in-one daily supplement powder co-founded by David Beckham and manufactured by Prenetics, a Hong Kong-based health sciences company. Launched in 2025, it positions itself as the everything-in-one-scoop alternative to taking multiple individual supplements. The name refers to its eight functional pillars: immunity, energy, gut health, joint support, heart health, cognitive function, longevity, and overall nutrition.

The product comes in two versions — IM8 Base (~$78/month) and IM8 Pro (~$99/month). The Pro version upgrades several critical nutrients to superior forms and higher doses. Both are powder formulas mixed with water once daily. The formula includes 75+ ingredients spanning vitamins, minerals, superfoods, amino acids, adaptogens, mushrooms, digestive enzymes, probiotics, a postbiotic, CoQ10, MSM, electrolytes, and a proprietary longevity blend called CRT8™.

IM8 holds NSF Certified for Sport status — meaning every production batch is tested for 290+ banned substances — and has completed a 12-week clinical trial at the San Francisco Research Institute examining blood micronutrient levels and gut microbiome changes. Both are genuine differentiators in a category rife with unverified claims.

What makes IM8 interesting isn't just the ingredient count. It's the quality split: the disclosed vitamins and minerals are genuinely excellent (best B-vitamin forms available, optimal D3+K2 pairing, clinical CoQ10), while the proprietary blends (superfoods, amino acids, adaptogens) are impossible to evaluate because individual doses aren't disclosed. It's a product that's simultaneously best-in-class and un-verifiable — depending on which part of the label you're reading.

IM8 Base vs. IM8 Pro: Is the Upgrade Worth It?

The Pro version upgrades seven key nutrients. Every upgrade is the right move — and several transform the formula from adequate to genuinely excellent. Here's exactly what changes and why it matters.

What IM8 Pro Gets Right

We criticize plenty about IM8 — but intellectual honesty demands acknowledging where this formula genuinely excels. And it excels in several areas that matter.

1. The Best B-Vitamin Forms in Any All-in-One

IM8 Pro uses P-5-P for B6, Riboflavin-5-Phosphate for B2, methylcobalamin for B12, and Quatrefolic® (6S)-5-MTHF for folate. These are the bioactive, coenzyme forms — they don't require liver conversion to become usable. This matters enormously: an estimated 30–40% of the population carries MTHFR gene variants that impair conversion of inactive B vitamins. Most all-in-one supplements, including AG1, use cheaper inactive forms. IM8 Pro doesn't cut this corner. It's the single best feature of the formula.

2. D3 + K2 Synergistic Pairing

Vitamin D3 at 2,000 IU paired with Vitamin K2 at 100mcg MK-7 is the gold standard. D3 enhances calcium absorption; K2 (specifically the MK-7 form) directs that calcium to bones and teeth rather than arterial walls. Without K2, supplemental D3 can contribute to vascular calcification. IM8 Pro gets both the forms and the doses right — and uses vegan D3 (VegD3®, lichen-derived) as a bonus. AG1 contains zero Vitamin D3. This is a significant advantage.

3. CoQ10 at 100mg — a Real Dose

Coenzyme Q10 at 100mg is a clinically relevant dose for mitochondrial energy production and cardiovascular support. Most clinical studies use 100–200mg daily. IM8 Pro discloses this dose individually — it's not hidden in a blend. AG1 includes CoQ10 but buries it in a proprietary blend with no disclosed amount. When a competitor hides a dose and you disclose it at clinical levels, that's a genuine win.

4. MSM at 1,500mg for Joint Support

Methylsulfonylmethane (MSM) at 1,500mg enters the lower end of the clinical range (studies typically use 1,500–3,000mg). It's a disclosed, standalone dose — not blended. MSM has demonstrated anti-inflammatory properties and joint comfort benefits in multiple randomized trials. No other major all-in-one supplement includes MSM at this dose. It's a real differentiator for anyone with joint concerns.

5. Spore-Based Probiotics at 10B CFU

IM8 includes 10 billion CFU from two spore-forming strains: Bacillus coagulans BC99® and Bacillus subtilis DE111®. Spore-based probiotics are heat-stable and survive stomach acid far better than standard Lactobacillus strains — which matters for a powder product that may be mixed with warm water or stored without refrigeration. This is a smart formulation choice that most competitors overlook.

6. Saffron (affron®) at 30mg

affron® is a patented saffron extract with clinical studies supporting mood and cognitive benefits at 28–30mg daily. IM8 Pro hits the clinical dose exactly. This is a unique inclusion — no other major all-in-one supplement includes saffron at an effective dose. It's a genuine mood-support ingredient, not a marketing checkbox.

7. NSF Certified for Sport

NSF Certified for Sport means every production batch is tested for 290+ banned substances. This is the same certification required by professional athletes in the NFL, MLB, and PGA. It verifies label accuracy and contaminant absence. AG1 does not hold this certification. For anyone concerned about what's actually in their supplement versus what the label claims, NSF batch-testing is the highest standard available in the industry.

What IM8 Gets Wrong

The strengths are real. So are the problems. And several of them are significant enough to prevent IM8 from scoring higher than 8.0.

1. Proprietary Blends Hide Key Doses

This is IM8's biggest problem. The "Raw Superfoods, Greens, Fruits & Herbs Complex" lists a total weight of 4,100mg — but contains 26+ individual ingredients (blueberries, cranberries, carrots, grape seed extract, milk thistle, tart cherry, cinnamon, and many more). None of their individual doses are disclosed. The math is simple and damning: 4,100mg ÷ 26 ingredients = 158mg average per ingredient. For context, clinical doses of grape seed extract start at 150–300mg. Milk thistle needs 200–400mg. Tart cherry requires 480–1,000mg. At 158mg average — and likely much less for ingredients lower on the list — most of these superfoods are present in token amounts. This is fairy dusting.

2. Amino Acid Complex Is a Black Box

The "Essential Amino & Renew Complex" weighs 1,580mg and contains 8 amino acids: L-isoleucine, L-leucine, L-valine, L-glutamine, L-proline, L-taurine, L-citrulline, and L-lysine. Not a single individual dose is disclosed. Clinical doses for L-citrulline alone start at 3,000mg. L-glutamine needs 2,000–5,000mg. The entire complex is 1,580mg — less than the minimum clinical dose for a single ingredient. You're paying for the word "amino acids" on the label, not for therapeutic amino acid dosing.

3. $78–99/month for Partial Transparency

IM8 Pro costs $99/month ($3.30/day). At that price point, you should know what you're getting. And for the vitamins and minerals, you do — they're fully disclosed and excellent. But for the superfoods, amino acids, adaptogens, and longevity blend, you're asked to trust the brand. That's a lot of trust at $99/month. Apostle discloses every single ingredient dose at a comparable price point. Full transparency and premium pricing are not mutually exclusive — IM8 just chooses not to offer both.

4. Unisex Formula — Optimized for Nobody

IM8 is a one-size-fits-all formula. Men and women have meaningfully different nutritional needs — iron requirements, calcium ratios, hormonal support ingredients, and prostate/breast health considerations vary significantly by sex. A unisex formula is a design compromise. It won't harm anyone, but it doesn't optimize for anyone either. Products like Apostle (men's-specific) are formulated for their target audience. IM8 tries to be everything to everyone.

5. No Fiber

Zero grams of fiber. In a product that claims to support gut health with probiotics, prebiotics, and digestive enzymes, the complete absence of fiber is a gap. Fiber is the single most important nutrient for gut health — more impactful than probiotics, more studied than prebiotics. Apostle includes 3,000mg SunFiber (PHGG). AG1 includes inulin. IM8 includes none.

6. The Beckham Factor

David Beckham is listed as a co-founder of IM8. He's one of the most recognizable athletes in history, and his involvement generates enormous press coverage. But Beckham is not a nutritional scientist, a formulator, or a supplement industry veteran. The actual product development is handled by Prenetics. Celebrity co-founders in the supplement industry serve one function: marketing. IM8 may be a genuinely good product — but that's despite the celebrity involvement, not because of it. Judge it on its ingredients, not its spokesperson.

The Proprietary Blend Problem: Let's Do the Math

Proprietary blends are legal. They're also the supplement industry's favorite way to put expensive ingredients on a label without actually including effective amounts. Here's how IM8's blends break down when you apply simple arithmetic.

Superfoods Blend: 4,100mg ÷ 26+ Ingredients

To put 158mg in perspective: a single blueberry weighs about 1,500mg. Clinical doses of the key superfoods in this blend require 200–1,000mg each. At 158mg average — and far less for ingredients further down the list — these aren't therapeutic doses. They're pixie dust. Enough to list on the label, not enough to matter in your body.

Amino Complex: 1,580mg ÷ 8 Amino Acids

Average per amino acid: ~198mg. Here's why that's a problem:

The entire amino complex (1,580mg) contains less than the minimum clinical dose for L-citrulline alone. For comparison, Apostle includes L-citrulline at 3,000mg as a standalone, fully disclosed ingredient. This isn't a close call — IM8's amino blend is a label claim, not a functional dose.

Adaptogens & Enzymes: 200mg ÷ 11 Ingredients

Average per ingredient: ~18mg. The blend contains reishi, chaga, rhodiola, ginseng, and 7 other ingredients. Clinical doses for ashwagandha start at 300mg. Rhodiola needs 200–600mg. Lion's mane requires 500–1,000mg. At 18mg average, these adaptogenic mushrooms and herbs are present in homeopathic quantities. They're on the label. They're not in your bloodstream at meaningful levels.

CRT8™ Longevity Blend: 100mg ÷ 5+ Ingredients

Average per ingredient: ~20mg. The blend contains berberine, resveratrol, urolithin A, astaxanthin, and spermidine. Berberine alone needs 500–1,500mg for metabolic effects. Resveratrol studies use 150–500mg. At 20mg each, this is an aspirational blend — forward-thinking in concept, but not therapeutically meaningful at these doses. It's the supplement equivalent of listing "artificial intelligence" in a product description because the software uses an if-then statement.

Full Ingredient Breakdown (IM8 Pro)

IM8 Pro's label is a tale of two halves. The vitamins and minerals are fully disclosed with specific forms and doses — and they're excellent. The proprietary complexes disclose total blend weights but hide individual ingredient amounts. Here's every disclosed component.

Vitamins & Minerals (Fully Disclosed)

Proprietary Complexes & Standalone Ingredients

Who IM8 Is For

Who Should Skip IM8

Best-for ratings reflect formula suitability based on ingredients, doses, and design decisions — not guaranteed outcomes. Always consult a healthcare provider before starting any supplement.

IM8 vs. AG1 vs. Apostle

How does IM8 Pro stack up against its two biggest competitors? Here's a fact-based comparison on the metrics that actually matter.

The Bottom Line on Each

IM8 Pro wins on B-vitamin forms, CoQ10, MSM, saffron, NSF certification, and sheer ingredient breadth. It loses on transparency (proprietary blends), price ($99/month), fiber (zero), and gender specificity (unisex). It's the right choice for someone who wants the widest coverage possible from a single scoop and values ingredient quality over ingredient-by-ingredient dose disclosure.

AG1 is the market leader with the longest track record and broadest cultural awareness. But it contains zero Vitamin D3 — a shocking omission — and hides virtually everything in proprietary blends. It's cheaper than IM8 Pro at $79/month but offers less disclosed nutrient quality. If brand trust and social proof matter more to you than label transparency, AG1 is familiar. It's not superior.

Apostle takes the opposite approach: full dose transparency on every ingredient, men's-specific formulation, 3,000mg fermented L-citrulline, 3,000mg SunFiber, and 2,000mg L-glutamine — all individually disclosed. It lacks CoQ10, probiotics, and the ingredient breadth of IM8. But you know exactly what you're taking, exactly how much, and it's designed specifically for men. For transparency-first buyers, Apostle is the answer.

Full Pros & Cons

Frequently Asked Questions

Our Final Verdict

IM8 Pro is a genuinely impressive supplement that's held back by a single decision: proprietary blends.

The disclosed half of the formula is among the best we've reviewed in any category. P-5-P, Riboflavin-5-Phosphate, methylcobalamin, and Quatrefolic — four active B-vitamin forms in a single product — is unmatched by any competitor. The D3+K2 pairing at 2,000 IU + 100mcg MK-7 is exactly what the clinical literature recommends. CoQ10 at a disclosed 100mg is a real cardiovascular and mitochondrial dose. MSM at 1,500mg enters clinical range for joint support. Saffron at 30mg hits the mood-support threshold. NSF Certified for Sport adds legitimate third-party verification. These aren't marketing claims — they're measurable, verifiable strengths.

The undisclosed half is where trust replaces evidence. 4,100mg across 26+ superfoods averages 158mg per ingredient — and ingredients later on the list likely contain far less. 1,580mg across 8 amino acids is less than the minimum clinical dose for a single one of them. 200mg across 11 adaptogens and enzymes is ~18mg each. 100mg across 5 longevity ingredients is ~20mg each. These blends look impressive on the back of the container. They don't look impressive when you do the math.

At $99/month, IM8 Pro is asking you to pay premium prices for a formula that's 50% excellent and 50% unverifiable. If you're comfortable with that trade-off — and many people reasonably are — it's the broadest, most nutrient-rich single scoop on the market. If you're not comfortable with it, Apostle shows that full transparency is possible at a comparable price point.

The David Beckham connection is what it is: marketing. It brought IM8 to public attention. It didn't formulate the product. Prenetics did, and they made some genuinely excellent decisions — alongside one very frustrating one. Disclose the full label, and this product scores higher. Until then, it's an 8.

We rate IM8 Pro 8.0 out of 10.

If you're buying IM8, buy the Pro. The Base version's inactive B-vitamin forms make it a fundamentally different — and inferior — product at $78/month. The $21 monthly premium for Pro is one of the clearest upgrade recommendations we've made.

For comparison, see our reviews of AG1 and Apostle, or explore our best all-in-one supplements for men and best all-in-one supplements for women rankings.

Comparison Guides & Rankings