Aryna Sabalenka, IM8 global ambassador
Global Ambassador
Tavi Castro
@tavicastro
4.8M
followers
Clinicians' Choice Hundreds of clinicians shared this with their patients without compensation.
IM8 Athlete · Ambassador

Built for the deep, Trusted on land.

Tavi Castro — the real-life Aquaman, fitness entrepreneur, bodybuilder, and professional freediver — runs his daily ritual on IM8. Clinically-proven, NSF Certified for Sport, and 90 nutrient-rich ingredients in one drink.

Start Tavi's Ritual → Save 20% · Free Welcome Kit
NSF
Certified for Sport
12-week
Clinical Trial
30-day
Money-Back
Tavi Castro × IM8

Proven in the deep. Perfect on land.

In the deep
In the deep
Professional freediver
The recovery
The recovery
Cold plunge ritual
The daily ritual
The daily ritual
30 seconds. 90 ingredients. Every morning.
On land
On land
Fitness entrepreneur · Bodybuilder
As a professional freediver, I'm extremely careful with what I put into my body. With IM8, I know I'm fueling my body with only the best, helping me stay resilient both in and out of the water.
Tavi Castro @tavicastro · 4.8M IM8 Ambassador
Aryna Sabalenka with IM8
Why he chose IM8

When you go deep, you can't afford to cut corners.

As a professional freediver, Tavi Castro's body is his instrument. What goes in matters more than almost anyone can understand — when you're 100 feet underwater on a single breath, there's no margin for error.

That's why Tavi is one of the most skeptical people alive when it comes to supplements. Too many proprietary blends, too little transparency. IM8 was the first product to clear his bar: NSF Certified for Sport, third-party tested for 280+ banned substances, and backed by a real clinical trial.

He's not just an ambassador. He's a believer — and in his world, those two things are never the same.

4.8M
Followers @tavicastro
90
Ingredients per serving
280+
Substances tested per batch
Start Tavi's Ritual — Save 20% →

The stack he runs on, every day.

SAVE 20% WITH CODE TAVI20

FREE WELCOME KIT ON SUBSCRIPTIONS

★ BEST VALUE — DAVID'S DAILY RITUAL
The Beckham Stack

ESSENTIALS PRO + LONGEVITY SET

The Beckham Stack

90 ingredients + 10 longevity compounds in one daily ritual. Co-founded by David Beckham and developed with a world-class scientific advisory team.

From $183/mo30% OFF

= $6.09 USD/serving

The complete daily system — nutrition today, longevity tomorrow90-day money-back guaranteeNSF Certified for SportReplaces $4,000+/year in supplements for $6 a day
ADD THE BECKHAM STACK TO CART
Daily Ultimate Essentials Pro

ALL-IN-ONE DAILY SUPPLEMENT

Daily Ultimate Essentials Pro

90 ingredients in one daily drink. Co-founded by David Beckham and developed with a world-class scientific advisory team.

From $78/mo30% OFF

= $2.61 USD/serving

Replaces 16 supplements95% felt more energy. 85% better digestion. 80% improved sleep.NSF Certified for Sport90-day money-back guarantee
ADD TO CART
Also included in the Beckham Stack →
Daily Ultimate Longevity

HEALTHY AGING

Daily Ultimate Longevity

10 clinically proven compounds in one drink to target all 12 hallmarks of aging.

From $104/mo30% OFF

= $3.47 USD/serving

Only supplement targeting every aging hallmarkRestore cellular energy and activate autophagyNSF Certified for Sport90-day money-back guarantee
ADD TO CART
Get both in the Beckham Stack →
Why Tavi chose IM8

What an elite freediver looks for in a daily.

Three non-negotiables.
01

Tested for what's not in it.

Every ingredient is third-party tested and NSF Certified for Sport — screened for 280+ banned substances. The same standard the WTA, MLB, and NFL trust. The standard a freediver needs before slipping below the surface.

02

Backed by a real clinical trial.

A 12-week randomized, controlled trial conducted by the San Francisco Research Institute showed 95% of participants felt a noticeable boost in daily energy, 80% reported better sleep, and 85% felt less bloated.

03

One drink. Ninety ingredients.

Multivitamins, superfoods, electrolytes, adaptogens, pre/pro/postbiotics, CoQ10, MSM, and CRT8™ Cell Rejuvenation Technology — clinically dosed, in a single 30-second ritual. Replaces a cabinet of 16 supplements.

12 weeks. Real participants. Real change.

Every ingredient in Daily Ultimate Essentials Pro is third-party tested and NSF Certified for Sport, ensuring it's free from over 280 banned substances, heavy metals, and contaminants. Our rigorous quality standards exceed industry requirements, making our formula trusted by elite athletes and sports leagues worldwide.

View Third Party Results

More Energy

95%

Of participants felt a noticeable boost in daily energy

A Healthier Gut

85%

Of participants experienced better digestion and less bloating

Sleep Better

80%

Participants reported getting better sleep

Perform Sharper

75%

Of participants noticed sharper focus and improved mental clarity

Results based on a 12-Week Randomized, Controlled, Clinical Trial conducted by the San Francisco Research Institute.

Clinical Comparison

The New Gold Standard

See how IM8 compares on clinical dosing, ingredient transparency, and overall formulation.

Ingredient
IM8IM8 Daily Essentials Pro
CompetitorLeading Greens Powder
Vitamin K2
+11% More 100mcg Clinical Dose
90mcg
CoQ10
+67% More 100mg Clinical Dose
60mg
Vitamin C
+80% More 900mg Clinical Dose
500mg
Prebiotic Fiber
+50% More 3g
2g
Riboflavin
+110% More 4.2mg Clinical Dose
2mg
Magnesium
+233% More 100mg
30mg
Selenium
+218% More 70mcg Clinical Dose
22mcg
Chromium
+300% More 100mcg Clinical Dose
25mcg
Copper
+400% More 1mg Clinical Dose
0.2mg
Manganese
+650% More 3mg Clinical Dose
400mcg
Molybdenum
+11% More 50mcg Clinical Dose
45mcg
Clinically dosed ingredients in every serving — no proprietary blends, no hidden dosages.
In Every Scoop

Eight benefits, one ritual.

Energy
100mg CoQ10 + B-complex for sustained, all-day fuel.
Immunity
900mg Vitamin C + 30mcg D3, clinically dosed.
Brain Health
35mg choline + bioavailable B vitamins for clarity.
Gut Health
10B CFU pre/pro/postbiotics — shelf-stable.
Hair, Skin, Nails
1,000mg MSM + essential vitamins for the glow up.
Heart Health
100mg CoQ10 supports cardiac energy production.
Hydrate
Magnesium, potassium, calcium — full electrolyte profile.
Renew
CRT8™ Cell Rejuvenation — resveratrol + astaxanthin.
WELCOME KIT — ARRIVES WITH FIRST ORDER
IM8 Beckham Stack welcome kit

BECKHAM STACK EXCLUSIVE

Get started with the Beckham Stack today

A first-order ritual kit designed for the complete IM8 system: Daily Ultimate Essentials, Longevity, and the tools that make the habit feel inevitable.

The Beckham Stack Pro Daily Essentials + Daily Ultimate Longevity
$183/mo
First purchase includes:
5x Bonus Sachets Included with first order
$18 Free
Essentials Box Display-ready sachet storage
$8 Free
Longevity Box Dedicated stack ritual case
$8 Free
Luxe Edition Mixer Included with first order
$18 Free
Shaker Bottle Included with first order
$45 Free
Total
Save $97
SHOP THE BECKHAM STACK
Free gifts with first order NSF Certified Cancel anytime
The Roster

Tavi's in good company.

Athletes, doctors, and performers worldwide.
Featured
@tavicastro · 4.8M
As a professional freediver, I'm extremely careful with what I put into my body. With IM8, I know I'm fueling my body with only the best, helping me stay resilient both in and out of the water.
Tavi Castro
Freediver · Bodybuilder · Founder, Dedicated Nutrition
@arynasabalenka
Every ingredient third-party tested and NSF Certified for Sport. That's the kind of trust I need at the top of my game.
Aryna Sabalenka
World No. 1 Tennis Player
@dustinpoirier · 5.3M
As a fighter, I've tried it all — endless pills and powders just to keep up. After my team checked the science, IM8 became my daily.
Dustin Poirier
UFC Lightweight
@drjamesdinic · 3.2M
The clinical doses, the transparency, the trial data — it's the formula I've been waiting for.
Dr. James DiNicolantonio
Cardiovascular Scientist
@dance10fikshun · 2.6M
My life is movement, balance, and expression. IM8 keeps me energized and feeling great.
Fik-Shun
World of Dance Champion
Start Today

The same ritual Tavi runs on, shipped free.

Subscribe with code TAVI20. 20% off forever, free Welcome Kit, and 30 servings of the only daily a freediver trusts before going below.

Start Tavi's Ritual — Save 20% →
✓ 30-Day Money-Back✓ Cancel Anytime✓ Free Shipping on Subscriptions

FAQs

  • What is your money-back guarantee policy?

    We stand behind our products with a generous satisfaction guarantee. For quarterly (90-day) subscriptions, you have a full 90 days to try IM8 risk-free. For monthly subscriptions and one-time purchases, you have 30 days. Email care@im8health.com and we'll process a full refund. No questions asked.

  • How does the subscription work?

    Choose your plan — quarterly (best value, 90-day supply) or monthly. Your subscription auto-renews at the same price. Cancel anytime with one click — no penalties, no hoops. Quarterly subscribers also get our extended 90-day money-back guarantee.

  • What changed in Essentials Pro?

    The PRO formula includes significant upgrades: 733% more B12 (200mcg Methylcobalamin), a new 30mg Saffron Extract for focus, bioactive Vitamin B6 (P5P instead of HCl), increased Vitamin D3, K2, Magnesium, and MSM, plus 300% more of our CRT8™ Complex. Same price — better formula.

  • What is Daily Ultimate Essentials Pro?

    Daily Ultimate Essentials Pro is our most advanced all-in-one daily supplement — 90+ clinically-dosed ingredients across 9 organ systems. Upgraded with bioactive forms like P5P and Methylcobalamin, plus new ingredients like Saffron Extract. It's clinical-grade nutrition co-founded by David Beckham and trusted by elite athletes worldwide.

  • Is IM8 third-party tested?

    Yes. IM8 is NSF Certified for Sport (the gold standard for athletic supplements) and independently third-party tested for purity, potency, and banned substances. It's trusted by World No. 1 Aryna Sabalenka and F1 driver Ollie Bearman, both subject to rigorous anti-doping protocols.

  • How does it taste?

    IM8 comes in three flavours: Açaí + Mixed Berries (the original — earthy, hint of chocolate, berry finish), Lemon + Orange (bright citrus, refreshing), and Mango + Passion Fruit (tropical, sun-kissed). All three are naturally flavoured. Can't decide? The Variety Pack includes 10 sachets of each.