Dymatize ISO-100 Nutrition Facts: 25g Hydrolyzed Whey Protein Isolate, 110–120 Calories, All Flavors Compared

Dymatize ISO-100 Nutrition Facts (Per 1 Scoop / ~30g)

One scoop of ISO-100 is approximately 30g. The core protein count (25g) and BCAA content (5.5g, including 2.6g of L-Leucine) are the same across every flavor — what shifts slightly between flavors is calories, carbs, fat, and sodium, depending on cocoa content and flavoring. These are the verified per-scoop numbers for the core US lineup:

Every flavor contains 5.5g of BCAAs including 2.6g of L-Leucine — the amino acid most directly tied to activating muscle protein synthesis. ISO-100 is certified gluten-free. Allergen note: it contains Milk (the protein source) and Soy from the soy lecithin used for mixability. Anyone with a soy allergy should confirm with a healthcare provider before use.

What “Hydrolyzed Whey Protein Isolate” Means — and Why It Matters

The full product name has three meaningful pieces. Here is what each one tells you:

• Whey protein isolate (WPI): Standard whey goes through filtration that removes most of the fat, carbohydrates, and lactose. The result is a powder that is roughly 90% or more protein by weight — higher than whey concentrate (about 70–80%). That is why a 30g scoop of ISO-100 delivers 25g of protein with barely any carbs or fat.
• Hydrolyzed: The isolate is then enzymatically broken down into shorter peptide chains. Hydrolyzed whey is pre-digested, so it absorbs faster than standard isolate — typically reaching the bloodstream within 30–60 minutes. The benefit is most relevant in a narrow post-workout window; for general daily protein intake it makes little practical difference.
• 100% isolate: Unlike most whey proteins that blend isolate with cheaper concentrate, ISO-100 uses only whey protein isolate as its protein source. There is no concentrate blended in, which is the “100%” in the name.

The practical effects: ISO-100 is gentler on people with mild lactose sensitivity (isolate has almost no lactose), mixes cleanly in water, and delivers a higher percentage of protein per gram of powder than concentrate-based products. The trade-off is a higher price per serving.

Sweeteners: Sucralose and Stevia (Not a Clean-Label Product)

Every flavor of ISO-100 is sweetened with sucralose (the artificial sweetener in Splenda) and steviol glycosides (stevia). If avoiding artificial sweeteners is a priority for you, ISO-100 is not the right powder — sucralose is present across the entire lineup. The popular Fruity Pebbles and Birthday Cake Pebbles collab flavors taste candy-sweet precisely because of these sweeteners, which is a major part of their appeal. For a whey protein with no artificial sweeteners, look for unsweetened options like Naked Whey. ISO-100 trades a clean sweetener label for superior taste, which is a reasonable trade-off depending on your preferences.

Dymatize ISO-100 vs Optimum Nutrition Gold Standard Whey

These are the two most-compared premium whey proteins. Both are excellent; the differences are real but subtle for most users.

The meaningful difference is in the protein source. ISO-100 uses 100% hydrolyzed whey isolate: minimal lactose, fastest absorption, fewest carbs. Gold Standard uses a whey blend (mostly isolate, with some concentrate and peptides) that costs less per serving and is available in more flavors at more retailers. For general daily protein goals, either works equally well for muscle building. ISO-100 makes more sense if you have mild lactose sensitivity or want maximum protein purity; Gold Standard makes more sense for flavor variety and a lower cost per serving.

Pros and Cons

Who Should Buy ISO-100 — and Who Should Skip It

Buy it if you want the highest protein-to-calorie ratio from a whey protein, you have mild lactose sensitivity and want a low-lactose option, you specifically want the fastest-absorbing post-workout whey, or you are drawn to the Fruity Pebbles, Birthday Cake Pebbles, or Dunkin’ collab flavors that taste genuinely like a treat. Skip it if you are vegan or avoid dairy (this is milk-based), you avoid artificial sweeteners (sucralose is in every flavor), you have a soy allergy, or a standard whey concentrate already meets your protein goals at a lower cost. This is general information, not medical or dietary advice.

Where to Buy

Dymatize ISO-100 is sold at GNC, Amazon, Target, H-E-B, Vitacost, and most supplement retailers. Costco carries a 50-serving Fruity Pebbles tub at the best per-serving price for that flavor. For core flavors like Gourmet Chocolate and Gourmet Vanilla, 5 lb tubs (approximately 71 servings) at Amazon or GNC offer the best value.

Frequently Asked Questions

How much protein is in Dymatize ISO-100?

25g of hydrolyzed whey protein isolate per scoop (approximately 30g), for 110–120 calories depending on the flavor. It also contains 5.5g of BCAAs including 2.6g of L-Leucine per scoop.

Is Dymatize ISO-100 really 100% whey isolate?

Yes. The protein blend in ISO-100 is 100% whey protein isolate — some of it in hydrolyzed form, the rest in standard isolate form. There is no whey concentrate blended in, which is why the fat, carb, and lactose content are lower than most protein powders.

Is ISO-100 good for lactose-sensitive people?

It is generally better than whey concentrate for people with mild lactose sensitivity because the filtration process removes almost all lactose from the isolate. It is not certified lactose-free, and people with severe lactose intolerance or dairy allergies should check with a healthcare provider. Many people who experience bloating or GI discomfort with concentrate-based shakes find that switching to an isolate resolves it.

Does Dymatize ISO-100 have artificial sweeteners?

Yes. Every flavor of ISO-100 contains sucralose plus stevia. If avoiding artificial sweeteners is important to you, look for unsweetened options like Naked Whey, or clean-label alternatives; ISO-100 is not a clean-sweetener product.

ISO-100 or Gold Standard Whey: which should I buy?

For general daily protein goals, either works equally well for building muscle. ISO-100 wins on protein purity — 100% hydrolyzed isolate, fewer carbs, less lactose. Gold Standard wins on price and the number of flavor choices. If you have mild lactose sensitivity or want the fastest post-workout absorption, ISO-100 is the better pick. If you want more flavors, wider in-store availability, or a lower cost per serving, Gold Standard is the smarter choice. Use the protein calculator to find your daily target, then decide which fits your budget and taste.

Bottom line: Dymatize ISO-100 is a high-purity whey protein powder that delivers 25g of hydrolyzed whey isolate per scoop for 110–120 calories — the strongest protein-per-calorie ratio of any major whey protein. Its key advantages are a 100% isolate formula (minimal carbs, fat, and lactose) and the fast absorption from hydrolysis. The trade-offs are sucralose in every flavor, soy lecithin, and a higher price than concentrate. Best for people who want maximum protein density, have mild lactose sensitivity, or enjoy the Pebbles and Dunkin’ collab flavors. Find your daily protein target with the protein calculator or compare more options in the protein snacks directory.