Dymatize ISO100 Hydrolyzed Whey Isolate (Chocolate Peanut Butter): 25g Protein, Labelgrade B (79/100)
B 79 / 100 — A hydrolyzed whey isolate: ~78g protein per 100g, 25g per scoop for 120 calories, with almost no fat or sugar. Top-tier protein density. The grade is pulled to B by sucralose-driven ingredient scoring and sodium that reads high per 100g (concentrated, as any powder is).
🛒 Buy on Amazon →The short answer
Dymatize ISO100 in Chocolate Peanut Butter packs 25 g of protein into a 120-calorie, 32 g scoop (USDA FDC 2452284) — about 78 g of protein per 100 g, with roughly 1 g of fat, 1 g of sugar, and 2 g of total carbs riding along. There is almost nothing in the scoop but protein. It earns a Labelgrade B (79/100): protein density is pinned at A+ and the macros are as lean as powder gets, but the grade is held back by the sucralose the ingredient score flags and a sodium figure that reads high once you scale it to 100 g. This is the “fast and lean” archetype of whey — a hydrolyzed isolate built for absorption speed and purity, not for fiber, fat, or anything resembling a meal.
Why the B
| Dimension | Grade | Score | Why |
|---|---|---|---|
| Protein density | A+ | 100 / 100 | 78 g per 100 g, ~83% of calories from protein — there is no headroom above this |
| Ingredient quality | B- | 70 / 100 | Short, legible panel, but sucralose and alkali-processed cocoa pull it off the top |
| Saturated fat load | A+ | 100 / 100 | 0 g — isolate filtration removes essentially all the fat |
| Sugar load | A+ | 96 / 100 | ~1 g per scoop; the sweetness is sucralose, not sugar |
| Sodium load | D | 47 / 100 | 160 mg per scoop is only ~7% DV, but scales to ~500 mg per 100 g and scores there |
| Fiber | F | 30 / 100 | 0 g — structural for an isolate; there is nothing here but protein and flavoring |
The honest read: this is an elite protein wearing a B because of two scoring rules, not because of anything wrong with the powder. The fiber F is unavoidable — an isolate is defined by not having the carbs that carry fiber. The sodium D is a per-100g penalty that exaggerates a per-serving non-issue. The one knock with real teeth is the B- on ingredients, and that comes down to a single design choice: sucralose.
What “hydrolyzed isolate” buys you (and what it doesn’t)
ISO100’s whole pitch lives in its two lead ingredients: hydrolyzed whey protein isolate first, then plain whey protein isolate. The isolate step filters whey to ~90%+ protein, which is why a scoop carries only ~1 g of fat and ~1 g of sugar instead of the fat and lactose a cheaper concentrate would. The hydrolysis step then enzymatically pre-cuts some of that protein into shorter peptides, so it clears the gut a notch faster.
Here’s the part the marketing won’t say plainly: for most people the hydrolyzed upgrade is a small one. A good plain isolate already absorbs quickly and supports muscle just as well across a full day — total daily protein does the heavy lifting, not the speed of any single scoop. Where hydrolysis genuinely earns its keep is GI comfort: if regular whey leaves you bloated, the pre-digested version is often easier to tolerate. Buy ISO100 for the fastest, gentlest isolate on the shelf — not because “hydrolyzed” is a tier above “isolate” in any way that shows up in the mirror.
How it stacks up against the usual suspects
| Product | Protein / scoop | Per 100 g | Calories | Type | Sweetener |
|---|---|---|---|---|---|
| Dymatize ISO100 Choc PB (this) | 25 g (32 g) | 78 g | 120 | Hydrolyzed whey isolate | Sucralose |
| Ascent Native Fuel Whey, Cappuccino | 25 g (31 g) | 81 g | 120 | Whey isolate/concentrate | Monk fruit |
| BSN Syntha-6 Edge, Vanilla | 24 g (36 g) | 67 g | 150 | Whey/casein blend | Sucralose + ace-K |
| Muscle Milk Pro Series, Chocolate | 32 g (53 g) | 60 g | 210 | Milk + whey blend | Sucralose + ace-K |
Two things jump out. First, against the blends — Syntha-6 and Muscle Milk Pro Series — ISO100 wins decisively on leanness: more protein per gram of powder, and only 120 calories versus their 150 and 210, because they fold in casein, creamers, and extra carbs to taste like a milkshake. Those are heartier shakes; ISO100 is a cutting tool.
Second, and more interesting: ISO100 is not the densest isolate in the room. Ascent’s Cappuccino actually edges it at ~81 g per 100 g for the same 120 calories — and it does the whole thing with 40 mg of sodium versus ISO100’s 160 mg, sweetened with monk fruit instead of sucralose. That’s the trade laid bare. If you want the fastest-digesting hydrolyzed whey and rate Dymatize’s chocolate-peanut-butter flavor, ISO100 is the pick (and it scores B here). If your priority is the cleanest label at identical macros, the lower-sodium, naturally sweetened sibling is the one that lands an A-.
Who it’s for
Reach for ISO100 Chocolate Peanut Butter if you want protein with almost nothing attached — post-workout, mid-cut, or to top off a daily target without spending calories on fat or carbs. It mixes in seconds, the macros are genuinely elite, and the flavor is well-rated. Skip it if artificial sweeteners are a dealbreaker (the sucralose is the only reason this isn’t an A-grade label), if you specifically want a filling meal-replacement shake (a blend serves that better), or — critically — if you have a peanut, dairy, or soy allergy, since this flavor carries all three.
Ingredients
Hydrolyzed whey protein isolate, whey protein isolate, partially defatted peanut flour, cocoa (processed with alkali), and less than 1% of: natural and artificial flavors, salt, soy lecithin, sucralose, potassium chloride.
In plain terms: two forms of whey isolate do all the protein work, real peanut flour and alkalized cocoa carry the chocolate-PB flavor, and the sub-1% tail is the flavor system — salt and potassium chloride for taste (and most of that sodium grade), soy lecithin to keep it mixing smoothly, and sucralose for sweetness. Short and legible by powder standards; the sucralose is the only line a clean-label shopper will quibble with. (Verbatim from the USDA Branded Foods entry, FDC 2452284.)
Where to buy
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Quick Facts
Per serving · 1 scoop (32 g)
Full nutrition facts
| Nutrient | Per Serving (1 scoop (32 g)) |
|---|---|
| Calories | 120 |
| Protein | 25g |
| Total Fat | 0.499g |
| Saturated Fat | 0g |
| Trans Fat | 0g |
| Total Carbohydrates | 2g |
| Dietary Fiber | 0g |
| Total Sugars | 0.998g |
| Sodium | 160mg |
| Cholesterol | 9.92mg |
| Calcium | 89.9mg |
| Iron | 0.499mg |
| Potassium | 200mg |
Scope: This page applies specifically to ISO100 Hydrolyzed 100% Whey Protein Isolate, Chocolate Peanut Butter (3 lb (1.4 kg) tub) · UPC 705016353354. Other sizes, flavors, or formulations may differ.
How this fits each diet
Each score is computed from the same USDA nutrition + ingredient data, against the published rules of each diet. They tell you "does this food fit this diet" — not whether the diet is right for you.
contains animal-derived ingredients
contains no listed meat or fish
no wheat, barley, rye, or malt detected in USDA ingredient list
Frequently Asked Questions
How much protein is in Dymatize ISO100 Chocolate Peanut Butter?
25 g per 32 g scoop (USDA FDC 2452284) — about 78 g per 100 g, which is near the ceiling for any protein source. A scoop is 120 calories, so roughly 83% of the calories come from protein.
What does 'hydrolyzed isolate' actually mean here?
Two things are stacked. 'Isolate' means the whey was filtered to ~90%+ protein, stripping out most fat, carbs, and lactose. 'Hydrolyzed' means some of that protein was then enzymatically pre-cut into shorter peptides, so it digests a step faster. The label reflects the order: hydrolyzed whey isolate is the first ingredient, with plain whey isolate second.
Is hydrolyzed whey worth paying more for over a regular isolate?
For most people, the practical edge is small. Hydrolysis speeds absorption and can be gentler if regular whey upsets your stomach, but a good plain isolate already absorbs fast and builds muscle just as well over a day. Pay up for ISO100 if you want the fastest-digesting option or have had GI issues with other whey — not because hydrolyzed is categorically 'better.'
Is ISO100 low-carb or keto-friendly?
Yes. 2 g total carbs, ~1 g sugar, and essentially no fat per scoop fit ketogenic and low-carb protocols easily. Stripping carbs and lactose is exactly what the isolate filtration does, which is why the macros are this lean.
Why is the sodium graded a D if it's only 160 mg?
160 mg per scoop is about 7% of the daily limit — a non-issue per serving. The D is a per-100g artifact: powder is concentrated, so 160 mg in a 32 g scoop scales to ~500 mg per 100 g, which scores poorly even though you'd never eat 100 g at once. Worth knowing the sodium is partly a choice here — added salt and potassium chloride sharpen the flavor.
Why is it a B and not an A when the protein is elite?
Protein density maxes the scale at A+. Two things cap the overall at B: the ingredient score flags sucralose (the artificial sweetener), and sodium reads weak per 100 g. Neither touches the protein itself. If artificial sweeteners don't bother you, this is one of the best-built isolates on the market.
Does the Chocolate Peanut Butter flavor contain allergens?
Yes — milk (whey), peanut (the partially defatted peanut flour that makes the PB flavor), and soy (soy lecithin). It's gluten-free. Note the peanut allergen is specific to this flavor; plain chocolate or vanilla ISO100 won't contain it.