NAKED Whey 5LB 100% Grass Fed Unflavored vs Isopure Zero Carb 100% Whey Isolate Unflavored
NAKED Whey 5LB 100% Grass Fed Unflavored (#1, best overall) vs Isopure Zero Carb 100% Whey Isolate Unflavored (#4): in our Whey Protein Powders scoring the NAKED Whey 5LB 100% Grass Fed Unflavored totals 8.3/10 and the Isopure Zero Carb 100% Whey Isolate Unflavored 7.2/10.
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TopsFive comparison scores
Side by side
| NAKED Whey 5LB 100% Grass Fed Unflavored | Isopure Zero Carb 100% Whey Isolate Unflavored | |
|---|---|---|
| Price | $99 | — |
| Protein | 25g per scoop | 25g per scoop |
| Type | Grass-fed whey (unflavored) | Ion exchange + microfiltered whey isolate |
| Servings | 76 | 47 |
| Testing | NSF Certified | — |
| Additives | None | Minimal |
| Carbs | — | 0g |
How they differ in real use
Built from our whey protein scoring, each product's published specifications, and verified owner feedback — not hands-on testing.
Both the NAKED Whey 5LB 100% Grass Fed Unflavored and the Isopure Zero Carb 100% Whey Isolate Unflavored made our Top 5 Whey Protein Powders, at #1 (best overall) and #4. Only one ingredient (100% grass-fed whey) with NSF Certified verification for purity and safety. The cleanest label in the group with solid 21.11 g/$ protein-per-dollar value. Ultra-clean ion exchange + microfiltered whey isolate with essentially just whey as the ingredient. 4.4 stars from 36,500+ ratings and good value (~23.04 g/$), but no third-party certification on Amazon.
We score whey protein powders on Protein Quality (35%), Third-Party Testing (25%), Taste & Mixability (20%), Ingredient Quality (10%) and Value (10%). On that basis the NAKED Whey 5LB 100% Grass Fed Unflavored totals 8.3 out of 10 and the Isopure Zero Carb 100% Whey Isolate Unflavored 7.2. The widest gap is Third-Party Testing, where the NAKED Whey 5LB 100% Grass Fed Unflavored scores 9 against 2 for the Isopure Zero Carb 100% Whey Isolate Unflavored — purity verification. Protein Quality also separates them: 9 for the Isopure Zero Carb 100% Whey Isolate Unflavored versus 8 for the NAKED Whey 5LB 100% Grass Fed Unflavored. The Isopure Zero Carb 100% Whey Isolate Unflavored claws back ground on Taste & Mixability and Value.
On paper, the specifications that actually differ: Type — Grass-fed whey (unflavored) on the NAKED Whey 5LB 100% Grass Fed Unflavored versus Ion exchange + microfiltered whey isolate on the Isopure Zero Carb 100% Whey Isolate Unflavored; Servings — 76 on the NAKED Whey 5LB 100% Grass Fed Unflavored versus 47 on the Isopure Zero Carb 100% Whey Isolate Unflavored; Additives — None on the NAKED Whey 5LB 100% Grass Fed Unflavored versus Minimal on the Isopure Zero Carb 100% Whey Isolate Unflavored. They match on Protein.
The NAKED Whey 5LB 100% Grass Fed Unflavored lists at $99; the Isopure Zero Carb 100% Whey Isolate Unflavored's current price is on the merchant page. Owners praise the NAKED Whey 5LB 100% Grass Fed Unflavored for only one ingredient (100% grass-fed whey) and NSF Certified for purity/safety; the most common complaint is unflavored only. Owners praise the Isopure Zero Carb 100% Whey Isolate Unflavored for ultra-clean ingredient list (just whey isolate) and ion exchange + microfiltered; the most common complaint is no third-party certification on Amazon page.
NAKED Whey 5LB 100% Grass Fed Unflavored
- Only one ingredient (100% grass-fed whey)
- NSF Certified for purity/safety
- No artificial sweeteners/flavors/colors
- GMO-free, soy-free, gluten-free
- Unflavored only
- 25g protein per serving (not highest)
- Premium pricing for grass-fed
Isopure Zero Carb 100% Whey Isolate Unflavored
- Ultra-clean ingredient list (just whey isolate)
- Ion exchange + microfiltered
- 25g protein per serving
- 4.4 stars (36,500+ ratings)
- No third-party certification on Amazon page
- Unflavored only in this SKU
- 47 servings per container
Which should you buy?
The NAKED Whey 5LB 100% Grass Fed Unflavored is the better fit for clean-label purists and those wanting single-ingredient protein — it is the higher-scoring pick here, chiefly for Third-Party Testing. The Isopure Zero Carb 100% Whey Isolate Unflavored is the better fit for clean-label isolate seekers and zero-carb diet, and the stronger choice if Protein Quality and Taste & Mixability matter more to you than the overall score. The NAKED Whey 5LB 100% Grass Fed Unflavored is a poor fit for flavor seekers; the Isopure Zero Carb 100% Whey Isolate Unflavored is a poor fit for those requiring NSF certification.
Choose the NAKED Whey 5LB 100% Grass Fed Unflavored if
- Clean-label purists
- Those wanting single-ingredient protein
- NSF certification needs
Skip it if
- Flavor seekers
- Budget maximizers
Choose the Isopure Zero Carb 100% Whey Isolate Unflavored if
- Clean-label isolate seekers
- Zero-carb diet
- Those wanting unflavored versatility
Skip it if
- Those requiring NSF certification
- Flavor preference
Common questions
Is the NAKED Whey 5LB 100% Grass Fed Unflavored better than the Isopure Zero Carb 100% Whey Isolate Unflavored?
In our Whey Protein Powders ranking the NAKED Whey 5LB 100% Grass Fed Unflavored scores higher overall, 8.3 to 7.2, with the biggest advantage in Third-Party Testing. The Isopure Zero Carb 100% Whey Isolate Unflavored is stronger on Protein Quality and Taste & Mixability, so it is the better pick if those matter most to you.
What is the main difference between the NAKED Whey 5LB 100% Grass Fed Unflavored and the Isopure Zero Carb 100% Whey Isolate Unflavored?
The headline spec difference is Type: Grass-fed whey (unflavored) on the NAKED Whey 5LB 100% Grass Fed Unflavored versus Ion exchange + microfiltered whey isolate on the Isopure Zero Carb 100% Whey Isolate Unflavored. In use, the gap that matters most is Third-Party Testing (9 vs 2 in our scoring): purity verification.