What to know about Immunocal
Immunocal is the product the rest of the Immunotec range is built around, and it does one specific thing: it supplies bonded cysteine, the building block the body uses to make its own glutathione.
Glutathione is produced by the body itself rather than absorbed whole from food, which is why a precursor matters more than a supplement of glutathione. Cysteine is the limiting building block, and it is fragile: ordinary processing destroys it. The patented preparation behind this whey protein isolate exists to keep it intact.
A box holds 30 single-serve pouches, one per day. The powder is fat-free and sugar-free, and it is generally tolerated by people who avoid lactose. It has been the subject of published research and is accepted as a food supplement by both Canadian and European regulators.
Wondering why a precursor works differently from swallowing glutathione itself? Read our guide to Immunocal vs liposomal glutathione: which raises glutathione better.
Key Benefits
- Supports the body’s own production of glutathione
- Supports immune health and everyday antioxidant defense
- Patented whey protein isolate with bonded cysteine
- Fat-free, sugar-free and suited to lactose avoidance
- 30 single-serve pouches, one month of daily use
What is in Immunocal
Immunocal has a single ingredient: a patented, undenatured whey protein isolate prepared to keep bonded cysteine intact. Each pouch provides the following, according to the Supplement Facts panel:
| Per serving | Amount |
|---|---|
| Serving size | 1 pouch (10 g) |
| Servings per box | 30 |
| Calories | 40 |
| Protein | 9 g (18% DV) |
| Total fat | 0 g |
| Total carbohydrate | 0 g |
| Calcium | 60 mg (5% DV) |
| Sodium | 20 mg (1% DV) |
| Whey protein isolate | 10 g |
Contains milk. Always check the current label on the official product page.
There are no sweeteners, flavors, fillers or added sugar. Whey protein isolate is naturally rich in the amino acid cysteine, and the patented process behind Immunocal is designed to keep that cysteine in its bonded form, cystine, so it survives digestion and reaches your cells as the building block for glutathione.
Who Immunocal suits
- Adults who want to support their body’s own glutathione production with a single, unflavored ingredient
- People who prefer a food-based approach over taking pre-made glutathione
- Active adults and athletes, since the product is Informed Sport certified
- Anyone who wants a simple daily habit that mixes into a drink they already enjoy
Who should choose something else or check first
- People with a milk protein allergy, since Immunocal is made from milk
- Anyone who has had an organ transplant or takes immunosuppressive medication should check with their medical team first
- People who are pregnant, breastfeeding or managing a medical condition should talk with their healthcare provider before starting
- Anyone looking for a meal replacement or a high-protein shake: at 9 g of protein, Immunocal is a daily supplement, not a protein meal
How to use Immunocal
Immunocal is fragile by design. The undenatured protein structure is what protects the bonded cysteine, so how you mix it matters.
- Empty one pouch into a cold or room-temperature drink such as water, juice or a smoothie base.
- Stir with a spoon or shake gently. Do not use a high-speed blender, and never add it to hot drinks or cooking.
- Drink it soon after mixing. It mixes differently from ordinary protein powders, and some small clumps are normal.
- Take one pouch a day, ideally at a consistent time, so a box lasts a month.
How Immunocal compares
| Immunocal | Standard whey protein | Liposomal glutathione | |
|---|---|---|---|
| What it provides | Bonded cysteine for your cells to make glutathione | Protein for muscle and satiety | Ready-made glutathione |
| Processing | Undenatured, patented process | Often heat-processed, which can break down bonded cysteine | Glutathione wrapped in fat-based liposomes |
| Human research | Placebo-controlled trials on glutathione levels | Extensive research on muscle and protein intake | Small pilot studies |
| Serving | 10 g, unflavored | Typically 25 to 35 g, flavored | Varies by brand |
Immunocal is not designed to replace a protein shake, and a protein shake is not designed to support glutathione production. For a detailed look at the evidence, read Immunocal vs liposomal glutathione. If you train hard, Immunocal Sport adds beet root and citrulline, and Immunocal Platinum adds a citrate mineral blend and creatine for healthy aging.
Common questions about Immunocal
What is Immunocal good for?
It supports the body’s own production of glutathione, one of the main antioxidants your cells make for themselves. It does this by supplying bonded cysteine, the building block glutathione production depends on. People take it daily for immune support and everyday antioxidant defense.
What is it made of?
A patented whey protein isolate, prepared so the fragile bonded cysteine survives processing intact. It is fat-free and sugar-free and generally tolerated by people who avoid lactose. Mix a pouch gently into a cold drink, because heat and blending damage the protein structure.
Why not take glutathione directly?
Glutathione swallowed whole is largely broken down during digestion, so much of it never reaches your cells. A precursor supplies cysteine, the limiting building block, and lets the body make its own glutathione where it is needed. That is the route this product takes.
How long does a box of Immunocal last?
One month. Each box holds 30 single-serve pouches, and the usual serving is one pouch a day, mixed into a cold drink.
Can I mix Immunocal with hot coffee or tea?
No. Heat can damage the undenatured protein that protects the bonded cysteine. Mix Immunocal into a cold or room-temperature drink instead.
Is Immunocal suitable if I am lactose intolerant?
Immunocal is a whey protein isolate, which is very low in lactose, and many people who avoid lactose tolerate it well. It is still a milk protein, so it is not suitable for anyone with a milk allergy.
Does Immunocal contain sugar or sweeteners?
No. The only ingredient is whey protein isolate, with 0 g of carbohydrate and 0 g of fat per 10 g pouch.
Glutathione guides
- Why Immunocal Is the Ultimate Glutathione Precursor
- What Is a Glutathione Precursor? A Plain-English Guide
- What Is Bonded Cystine? Cystine vs Cysteine Explained
- NAC vs Undenatured Whey Protein for Glutathione Support
- Glutathione and Menopause: Antioxidant Support Through Perimenopause
- An Everyday Glutathione Protocol for Active Adults
- Where to Buy Immunocal Glutathione Support (and How to Avoid Fakes)
- How to Increase Glutathione Naturally: 9 Evidence-Based Habits
- Immunocal in the Physicians’ Desk Reference: What It Means
- How to Talk to Your Doctor About Immunocal Using the PDR
Related products
Worth looking at alongside this one: Immunocal Platinum, Sunray, Immunocal Booster.