Head to head · Protein Powder
Dymatize ISO100 Hydrolyzed Whey Protein Isolate vs Transparent Labs 100% Grass-Fed Whey Protein Isolate
Transparent Labs scores higher overall (8.8 vs 8.7 out of 10), mainly on quality & purity and transparency. Dymatize still leads on value and experience.
Updated September 2026 from our full reviews · How we score
An all-isolate whey with a hydrolyzed fraction: 25 g protein and about 2.7 g leucine per 120-calorie scoop, with Informed Choice testing.
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A grass-fed whey isolate with 28 g of protein per scoop, stevia instead of artificial sweeteners, and NSF Certified for Sport status.
We may earn a commission when you buy through these links — it never affects our scores. How we make money
We may earn a commission when you buy through these links — it never affects our scores. How we make money
The short answer
Choose Dymatize if…
- Lifters who want a low-carb, low-fat isolate
- People with mild lactose sensitivity
- Drug-tested athletes
- Calorie-conscious dieters
- You care most about value, experience
Choose Transparent Labs if…
- Drug-tested athletes
- Clean-label shoppers avoiding artificial sweeteners
- People who want grass-fed sourcing
- Lactose-sensitive lifters
- You care most about quality & purity, transparency
Side by side
| ISO100 Hydrolyzed Whey Protein Isolate | 100% Grass-Fed Whey Protein Isolate | |
|---|---|---|
| Our score | 8.7 / 10 | 8.8 / 10 |
| Efficacy (30%) | 9.0 | 9.1 |
| Quality & Purity (25%) | 9.0 | 9.4 |
| Value (20%) | 8.0 | 7.4 |
| Experience (15%) | 8.9 | 8.6 |
| Transparency (10%) | 8.5 | 9.5 |
| Form | Powder | Powder |
| Serving | 1 scoop (32 g)71 servings per container | 1 scoop (34.9 g)30 servings per container |
| Price per serving | See retailer | $2.17 |
| Testing & certifications | Informed Choice | NSF Certified for SportInformed Choice |
| Dietary | Gluten-free | Gluten-free |
| Key ingredients |
|
|
| Flavors | 8 (Gourmet Chocolate, Gourmet Vanilla, Fruity Pebbles…) | 8 (Milk Chocolate, French Vanilla, Dark Chocolate…) |
| Creator video reviews | 5 | 5 |
Pros and cons
ISO100 Hydrolyzed Whey Protein Isolate
- 25 g of protein and about 2.7 g of leucine per 120-calorie scoop, all from whey isolate
- Informed Choice banned-substance mark on the label
- Only 2 g of carbohydrate and 1 g of sugar in Gourmet Chocolate
- Dymatize publishes a full amino acid profile for the flavor
- buyers frequently praise fast, clump-free mixing
- About $1.55 per serving for the 5 lb tub, pricier than whey blends
- Contains soy lecithin and is sweetened with sucralose (plus stevia in the current formula)
- Some buyers still report bloating despite the isolate base
- Evidence for a real-world benefit from hydrolysis is thin, so part of the premium is marketing
100% Grass-Fed Whey Protein Isolate
- 28 g of protein per scoop from grass-fed whey isolate
- Listed in NSF's Certified for Sport database and certified by Informed Choice (per the brand)
- Every ingredient disclosed by weight, with batch test results published online
- No artificial sweeteners, dyes or preservatives
- buyers frequently describe it as easy on the stomach
- About $2.17 per serving for the 30-serving tub, well above whey blends
- Stevia can leave an aftertaste some people dislike
- Made on equipment that also processes eggs, soy, wheat, shellfish, fish oil, tree nuts and peanut oil, and some flavors contain peanuts
- Mostly sold through the brand site and Amazon, so in-store discounts are rare
Our verdicts
ISO100 Hydrolyzed Whey Protein Isolate
ISO100 is one of the most complete whey isolates you can buy: 25 g of protein per scoop with a published amino acid profile, minimal carbs and fat, and banned-substance certification. You pay a premium over whey blends, and the hydrolyzed angle is more marketing than proven performance edge, but for a lean, well-tested isolate that mixes easily it is a safe pick.
Full review
100% Grass-Fed Whey Protein Isolate
For shoppers who prioritize ingredient transparency and third-party verification, this is one of the strongest whey isolates available: 28 g of protein, a short stevia-sweetened ingredient list, NSF Certified for Sport status and public batch testing. The trade-off is price, at more than $2 per serving, and stevia's flavor will not suit everyone.
Full review
What creators say
Questions people ask
Is Dymatize better than Transparent Labs?
Are Dymatize and Transparent Labs third-party tested?
Who should choose Dymatize over Transparent Labs?
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