Immunocal®

The only patented glutathione precursor of its kind, featuring Bonded Cysteine technology. Clinically proven. All-natural. Trusted worldwide for nearly three decades.

30 individual serving pouches | Ships direct from Immunotec

What Makes Immunocal Different From Every Other Glutathione Product

Most people shopping for glutathione support reach for a capsule or a pill. The problem with that approach is simple — glutathione taken directly breaks down in the digestive tract before it ever reaches your cells. Your body cannot absorb finished glutathione efficiently from an external source.

Immunocal solves this by working differently. Instead of delivering glutathione directly, it delivers cystine — the rate-limiting amino acid your cells need to produce glutathione on their own. This is not a workaround. It is how your body was designed to work. Immunocal gives your cells the raw material; your cells do the rest.

The proprietary Bonded Cysteine technology at the heart of Immunocal is what makes this possible. Immunotec’s low-heat manufacturing process preserves the delicate disulfide bonds in the cysteine protein that other whey products destroy through high-heat pasteurization and aggressive blending. Other whey proteins contain the same amino acids — but the structure that makes cystine bioavailable is gone by the time it reaches your gut. With Immunocal, that structure is intact.

The result is the only product of its kind holding 79 patents across 28 countries, backed by over 45 years of research and more than $25 million in continued clinical study investment.

The Research Behind Immunocal

90+ Published Studies

Immunocal has been studied more extensively than any other glutathione precursor on the market. Over 90 published studies, including 23 gold-standard randomized, double-blind, placebo-controlled trials. Research conducted in partnership with over 125 universities. More than 400 scientific papers published by Immunotec’s scientific advisory board.

This is not supplement marketing. This is a documented clinical record that took decades to build.

Elite Athlete Endorsements — Unpaid

Immunotec does not pay its elite athlete ambassadors. Over 100 professional athletes worldwide use Immunocal, experience the results firsthand, and choose to represent the brand. That distinction matters when evaluating credibility.

Immunocal Benefits

Immune System Support

By raising the body’s glutathione production, Immunocal helps support your body’s natural defenses.*

Whole Body Detoxification

Immunocal supports the body’s natural detox pathways, helping protect against environmental toxins.*

Antioxidant Defense

Elevated glutathione levels help neutralize harmful free radicals, reducing cellular damage.*

Energy Support

Higher glutathione levels support better cellular energy production and increased stamina.*

Mental Clarity

Glutathione is involved in brain energy production and cognitive function.*

Antibody Production

Glutathione aids in the creation of antibodies that support the body’s natural immune response.*

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

How to Use Immunocal

Serving Size

One pouch per day is the standard serving size. If you are using two pouches daily, they can be taken together or at separate times.

How to Mix

Add 1 oz of your preferred cold liquid to your shaker cup. Add one pouch of Immunocal. Put the lid on and shake for 15 seconds. Add an additional 5 oz of liquid until the shaker cup is three-quarters full. Drink and enjoy.

What to Avoid

Do not mix with hot liquids or extremely acidic liquids. Avoid high-powered blenders — a low-speed handheld blender is fine if needed. Consume within 30 minutes of mixing for best results.

Best Time to Take Immunocal

Most people take Immunocal first thing in the morning or after a fasting period of a few hours. This supports better protein absorption and amino acid utilization.

Storage

Store in a cool dry place at 70 to 90 degrees Fahrenheit. Keep away from heat and moisture.

Immunocal FAQ

What is the difference between Immunocal and a regular antioxidant supplement?

Immunocal does not work as an antioxidant itself. It provides the building blocks your body needs to produce glutathione — the master antioxidant — from the inside out. Standard antioxidants deliver finished compounds that may not survive digestion intact. Immunocal works with your body’s own systems.

How is Immunocal different from regular whey protein?

Regular whey protein contains similar amino acids but is manufactured using high heat which destroys the delicate disulfide bonds that make cystine bioavailable. Immunotec’s proprietary low-heat process preserves those bonds — making Immunocal fundamentally different from any standard whey product despite superficial similarities.

Can children use Immunocal?

Yes. Immunocal is safe for all ages. Serving sizes for children are adjusted by weight. Consult the pediatric serving size chart or contact us directly for guidance.

Can I mix Immunocal with milk?

It can be mixed with milk but may taste salty or sour. We do not recommend it but it will not affect the product’s efficacy if you prefer it that way.

How long does Immunocal last once mixed?

Consume within 30 minutes of mixing. Keep it cool while waiting.

Is there a guarantee?

Yes. Immunotec offers a full 30-day money back guarantee, less shipping and handling. You can also cancel your subscription at any time before your next shipment with no hassle.

Where does Immunocal ship from?

All orders ship direct from Immunotec. Nothing passes through a third party.

Want to understand the full science before you order? Read our complete Immunocal glutathione guide.