Best 100% Grass-Fed Whey Isolate for Clean Muscle Building (2026)
Review the cleanest non-GMO, hormone-free grass-fed whey isolates tested for heavy metals, amino acid spiking, and true serving cost.
2026 Clinical Sports Nutrition Directory • FTC 16 CFR § 255
Bloating and digestive distress often stem from low-purity whey concentrates high in lactose and poor processing gums. We evaluated ultra-pure cross-flow microfiltered isolates and hydrolyzed peptides designed for effortless assimilation.
| Supplement & Score | Price / Serving | 30-Day Supply | Macros (P / C / F) | Formula Highlights | Verified Offer |
|---|---|---|---|---|---|
| Best Overall Value |
$1.69
per serving
|
$50.70/mo
$1.69 / 25g P
| Protein: 25g Carbs: 1g Fats: 0.5g |
| Check Price → |
| Top Protein Density |
$1.85
per serving
|
$55.50/mo
$1.65 / 25g P
| Protein: 28g Carbs: 1g Fats: 0.5g |
| Check Price → |
|
$1.95
per serving
|
$58.50/mo
$1.74 / 25g P
| Protein: 28g Carbs: 0g Fats: 0g |
| Check Price → |
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Dymatize ISO100 Hydrolyzed Whey Isolate offers the lowest cost per serving in our comparison at $1.69 per serving, featuring 100% Hydrolyzed Whey Isolate for rapid gastric emptying.
Dymatize ISO100 Hydrolyzed Whey Isolate leads our lab comparison with 100% Hydrolyzed Whey Isolate for rapid gastric emptying, Less than 1g sugar and lactose — ultra gentle on sensitive stomachs, 5.5g BCAAs with 2.6g Leucine per serving at $1.69 per serving.
IsoLean Grass-Fed Whey Isolate provides 28g protein, 1g carbohydrates, and 0.5g fat per serving.
Review the cleanest non-GMO, hormone-free grass-fed whey isolates tested for heavy metals, amino acid spiking, and true serving cost.
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