Men's healthcare
that actually works.

Be a man. Get your edge back.

Doctor-led men's healthcare. Personalized in an app you'll actually use. No waiting rooms. No insurance fight. Shipped discreetly to your door.

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Real doctors · Real labs · Shipped to your door

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What Berserk Lab is.

The integrated stack for men who refuse to fade.

One brand. Real doctors. Operator-grade supplements live today. The health app that actually pulls it together. Weight loss and peptides next. All on one platform. Built by men who lift, for men who run things.

Real doctors. Real labs.

Licensed medical professionals run the protocols. Real labs published. No insurance fight. Shipped discreetly to your door.

One operator app.

CALLUS pulls every health input you have into a daily plan you'll actually follow. Free with every bottle of EstroBlock.

Built by men who lift.

Operator-grade quality. Athlete-tested. We take what we sell and post the labs. No corporate filter.

Licensed medical providers 100% online, no waiting rooms Clear pricing, no insurance fight Shipped discreetly to your door

EstroBlock

Take back the edge estrogen overload stole.

You have estrogen overload. Modern life is loading you with it. Plastic. Soy. Beer can linings. Body fat. A clogged liver. Your body keeps converting your testosterone into estrogen, and you end up softer, slower, and tired.

EstroBlock promotes healthy estrogen metabolism. Built for men. One pill with breakfast. That's it.

Four ingredients. Full clinical doses. No proprietary-blend hide-the-ball bullshit.
4,000+ men. 4.9★. 60-day money-back. Third-party tested. cGMP FDA-registered facility.
Week 3 you feel it. Weeks 6 to 8 you see it. Day 90 it locks.

Get EstroBlock → How it works ↓

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CALLUS

Stop juggling 10 health apps.

An app for sleep. An app for calories. An app for workouts. An app for your supplements. You have all the data and no idea what to do with it. CALLUS is the one platform that pulls it all in and turns it into a daily plan.

Voice journal. Talk into your phone mid-set. The AI logs every rep and syncs with whatever health-tracking apps you already use.
Custom protocols built from your labs, supplements, and goals. What to eat. How to lift. How to recover. What habits actually move the needle.
Biomarker dashboard. Upload your labs. See your whole health in real time. The only way to improve is to track.

Free with every bottle of EstroBlock. No premium lock-out. No subscription you can't cancel.

Get the app →

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Weight Loss

Doctor-guided weight loss, built for men.

GLP-1 burns the fat. We rebuild the man. The right medication for your body, paired with the metabolic stack that keeps your drive, your mood, and your muscle on the way down.

1-to-1 physician guidance. 24/7 support. Personalized to your labs and your goals.
Metabolic stack so you keep drive, mood, and muscle while you cut.
Track everything in CALLUS. One platform. Your whole protocol.

Founding pricing locks for life · early access · early product

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Peptides + Longevity

Targeted support for performance, recovery, and longevity.

Unlock what your body can do.

Peptide therapy supports how your body recovers, performs, and repairs over time. We work with US-licensed compounding pharmacies and licensed medical professionals to deliver targeted protocols for goals like recovery, strength, sleep, and overall optimization.

US-licensed compounding pharmacy.
Licensed medical professionals. Real labs. Personalized protocol.
Track your progress in CALLUS alongside the rest of your stack.

Founding pricing locks for life · early access · early product

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From men who took it

4,000+ men. 4.9★ on EstroBlock.

87% chest + waist 83% strength + size 85% libido 94% steady energy

★★★★★

Got rid of gyno

"I noticed my nipples getting knots after a bulk cycle and honestly panicked about gyno. Started taking EstroBlock and within 6 weeks, the gyno was gone."

James C.

★★★★★

Got rid of excess estrogen

"Was stuck at 30% body fat for months despite cutting calories and doing more cardio. Nothing was working on my love handles and gyno until I tried EstroBlock."

Kyle B.

★★★★★

Destroying plateaus

"Lifts kept going up but I looked the same in the mirror for over a year. I also had gyno, but within a couple weeks of taking EstroBlock, I started getting even stronger and more lean. The gyno went away as well."

Hanes L.