• FitProtect
  • FitProtect
  • FitProtect
  • Closeup of Fitties FitProtect on outdoor table
  • Female athlete holding bottle of Fitties FitProtect outdoors
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FitProtect

The Antioxidant Your Cells Would Actually Choose

Professional-grade L-ergothioneine, backed by real science and built to go where antioxidants usually don’t—your brain, your mitochondria, and your long game.

Why FitProtect

    • L-ergothioneine, to help neutralize oxidative stress and protect your cells from DNA, mitochondrial, and telomere damage*
    • Crosses the blood-brain barrier, to support cognitive health, mood regulation, and brain aging—because what good is an antioxidant if it never gets there?*
    • Activates Nrf2 pathways, supporting your body’s own antioxidant defenses to do more than just mop up free radicals*
    • Supports glutathione levels, helping you maintain one of your body’s most critical detox and longevity molecules*
    • Clinically studied and fermentation-derived, so you’re not relying on mushroom powder and a prayer for results*
  • Only 10 left in stock—order now.
Made in the USA

Made in the USA

Same-day Shipping

Free Same-Day Shipping

Fitties Satisfaction Guarantee

Satisfaction Guaranteed

About FitProtect

FitProtect isn’t your average antioxidant—it’s the one your cells have actually been waiting for. At the core is L-ergothioneine, a rare amino acid compound your body can’t make, but can’t stop stockpiling once it gets it. Unlike overhyped blends that never make it past your gut, this one crosses the blood-brain barrier, gets picked up by a dedicated cellular transporter (OCTN1), and goes straight to where it counts: your brain, mitochondria, and long-term health.

This isn’t mushroom extract hype—it’s a high-purity, 99% L-isomer, developed through precision fermentation for better stability and bioavailability. Studies show FitProtect supports telomere integrity, mitochondrial function, antioxidant gene activation, and even glutathione production—which makes it less of a “supplement” and more of a cellular insurance policy.

Not all antioxidants are created equal. FitProtect is for people who care more about what works than what looks good on a label.
How to Use

Take one (1) capsule once or twice daily, or use as directed by your healthcare professional.
Other Ingredients

Microcrystalline cellulose, dicalcium phosphate, capsule (hypromellose and water), ascorbyl palmitate, and silica.
Formulated to Exclude

Wheat, gluten, corn, yeast, soy, animal and dairy products, fish, shellfish, peanuts, tree nuts, egg, sesame, ingredients derived from genetically modified organisms (GMOs), artificial colors, artificial sweeteners, and artificial preservatives.

FitProtect
FitProtect
FitProtect
Closeup of Fitties FitProtect on outdoor table
Female athlete holding bottle of Fitties FitProtect outdoors
Closeup of Fitties FitProtect on outdoor table

The Antioxidant with a Game Plan

L-ergothioneine goes beyond surface-level hype. It reaches the brain, targets mitochondria, and helps activate internal antioxidant pathways—supporting performance where it counts.

Female athlete holding bottle of Fitties FitProtect outdoors

Not Your Mushroom’s Ergothioneine

FitProtect features a 99% pure L-isomer, developed via precision fermentation. No ground-up fungi. No filler. Just a bioavailable form your cells can actually put to use.

Fitties FitProtect

Longevity, Without the Lecture

This isn’t a buzzword blend. It’s a science-backed formula with links to telomere health, oxidative balance, and cellular energy—delivered in a capsule that skips the overpromises.