It’s Not Your Training
It’s Your Glutathione...

#1

Creators of the world’s only patented glutathione precursor proven to raise glutathione levels naturally.

It’s Not Your TrainingIt’s Your Glutathione...

100+

Peer reviewed studies,

26 Gold Standard Studies

4.6 / 5

Loved by 100+ athletes

Fueling Better Performance Worldwide

Every workout creates oxidative stress, and during intense training, glutathione levels can drop significantly — limiting your body’s ability to neutralize that stress and recover efficiently.

Why does this matter?

As glutathione declines, fatigue lingers, recovery slows, and injury risk rises. This is the gap most sports supplements ignore. Caffeine and creatine may boost energy or muscle, but they don’t support the cellular performance system your body relies on to bounce back. That’s why we designed Immunocal Sport™, alongside targeted products that work with your body’s cellular performance system.

Shop Cellular Performance

~40%

Total antioxidant capacity can drop by up to 40% after exhaustive exercise. Depleting active glutathione levels during and after training, increasing oxidative stress at the cellular level.

2–3x

High-intensity athletes experience up to 3× higher oxidative stress compared to non-athletes, increasing the need for cellular antioxidant support.

~50%

Glutathione depletion has been shown to reduce endurance performance by up to 50%, highlighting its role in sustained physical output.

~60%

Lower antioxidant defenses are associated with up to 60% higher muscle damage markers following intense exercise, and athletes may experience up to 6x the risk of illness.

01.

Patented Undenatured Bioactive Whey Protein Isolate providing immune resilience

A premium whey protein isolate designed to provide bonded cysteine, a key precursor that supports the body’s natural production of glutathione - the body’s master antioxidant.

02.

Tart Cherry for Optimal Recovery

Contains Tart Cherry, an excellent source of anthocyanin which helps reduce inflammation and muscle soreness. Also, featuring melatonin, to help regulate sleep and speed up recovery.*

03.

Nitric Oxide Boost for Better Performance

Exclusive citrulline and beetroot blend raises nitric oxide levels in the body and increases the delivery of oxygen and nutrients to the muscles.*

04.

Magnesium Citrate power your Performance

One of the most bioavailable forms of magnesium, supporting optimal electrolyte balance, energy metabolism and helping muscles function smoothly and recover efficiently.

05.

Highest Bioavailability of Any Other Edible Protein

With up to 1.6× higher bioavailability than common protein sources like chicken, or traditional whey, this undenatured protein delivers Bonded Cysteine™ in a form your body can efficiently absorb and use.

How it Works

Fueling Your Cells And Recovery From Day One

Why Glutathione Our Science

Your First Week

Your energy starts to lift and mornings get smoother as your body leans into the change. The patented Bonded Cysteine makes it past digestion, gets absorbed into your cells, and starts supporting your body’s natural glutathione production. As glutathione levels begin to rise, your cells get more support for protection and recovery, which is why those first shifts can feel noticeable even in week one.*

Days 7 -14

Sleep gets deeper and you wake up more refreshed, and focus feels cleaner during the day. With a steady daily supply of what your cells use to keep glutathione production going, your baseline support stays consistent instead of spiking and crashing. At the same time, the NRF2 pathway is active, signaling your body to turn on more of its built-in antioxidant and detox defenses when stress shows up. That’s why week two feels like more stability, better sleep, and more resilience.*

Days 15-30

This is when “feeling better” turns into feeling more capable. You recover faster between sessions, push a little harder, and bounce back cleaner. With steady glutathione support, muscle repair and detox pathways have the raw materials they need to run consistently, which shows up as better resilience and steadier momentum day to day.*

Days 31-60

By now, many users are feeling a "new normal". The change feels less like a spike and more like a new baseline. Energy tends to feel steadier throughout the day, soreness can fade quicker, and crashes become less common. With glutathione support becoming more established, your body can stay in a stronger repair and recovery rhythm, helping you handle training, competition, and busy weeks with less fallout.*

Why Glutathione Our Science

DEVELOPED BY

World-Renowned Immunologists at McGill University

GOOD FOR

Athletes, High Performers, and Weekend Warriors

POWERED BY

More than 80 Method of Use Patents and 92 Clinical Studies

ENDORSED BY

Dr. Luc Montagnier, Nobel prize winner of Medicine 2008 for its health benefits

TRUSTED BY

100+ Olympic Athletes, 2+ Professional Teams, in 5+ Countries

FYI

The Only Clinically Proven Formula to Raise Your Glutathione Levels Naturally

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Amplify Your Results With

Immunocal Sport

The world’s first patented and proven glutathione precursor of its kind, powered by Nitro Boost.

$199.00

Immunocal Booster

This is the clean, fast-acting, healthy energy you’ve been searching for, with the exclusive Nrf2 Catalyst™.

$67.70

Immunocal

Immunocal®, is an all-natural protein with the highest biological value, clinically proven to raise glutathione naturally.

$133.50

Backed by Experts Who Know Optimal Health

Fuel The Years That Matter

Immunocal is not glutathione — it’s the patented precursor that allows the body to produce its own glutathione inside the cell, where it’s needed most. That distinction is critical. Supporting natural glutathione production is one of the most foundational strategies for cellular performance.

Glutathione isn’t meant to be absorbed — it’s meant to be made. Supporting your body with the right precursors is far more effective than taking glutathione directly. That’s why Immunocal stands out as the gold standard.

Our Athletes

Fueling Champions Worldwide

More Reviews

Kate French

Pentathlete from Great Britain Olympic Gold Medalist | 4-Year Product User

“I am a modern pentathlete and won the gold medal at the Tokyo 2020 Olympic Games. I am a proud Immunotec Elite Athlete Ambassador. The inclusion of Immunocal, Immunocal Sport, and Booster products in my daily training routine has been paramount in my journey towards achieving my lifelong dream of becoming an Olympic champion.”

Christopher Thompson

Distance Runner from Great Britain 2x Olympian | 14-Year Product User

“Immunocal is one of those products which over the years has shown and proven to be a vital part of my recovery process to keep me training hard and competing hard. As Elite Athletes you know and feel the difference when a product works and works well.”

* The views, thoughts, and opinions expressed belong solely to the author or presenter, and not necessarily to any organization, committee, or other group, individual, or entity.

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