Zero Carb 100% Whey Protein Isolate
Isopure Zero Carb 100% Whey Protein Isolate is a whey isolate protein powder with 25 g of protein per 31 g (about 1 scoop). It scores 71/100 on the TBPP Quality Score. We found no third-party testing certification.
Nutrition per serving
Creamy Vanilla flavor, from the label.
| Serving size | 31 g (about 1 scoop) |
|---|---|
| Protein | 25 g |
| Calories | 110 |
| Carbohydrates | 0 g |
| Sugar | 0 g |
| Fat | 0.5 g |
| Sodium | 190 mg |
| Protein by weight | 81% |
| Leucine | Not verified |
| BCAAs | Not verified |
How it scored
71 of 100 points. How we score
| Criterion | Points | Why |
|---|---|---|
| Protein density | 30 / 30 | 81% of each scoop is protein |
| Third-party testing | 0 / 25 | No verified independent testing program |
| Label transparency | 20 / 20 | Fully disclosed formula, no amino spiking |
| Sugar | 10 / 10 | 0 g sugar per serving |
| Ingredient simplicity | 6 / 10 | Mix of natural and artificial flavors or sweeteners |
| Verified label data | 5 / 5 | 7 of 7 label values verified |
Formula and label
| Type | Whey Isolate |
|---|---|
| Protein sources | Whey Protein Isolate |
| Third-party testing | None found |
| Sweeteners | Sucralose |
| Proprietary blend | No |
| Added free amino acids | No |
| Dietary | Gluten-Free |
| Allergens | Milk, Soy |
| Made by | Isopure (Glanbia) |
| Sold at | Isopure (brand site) |
Price
$39.99–$221.99 for 2.73 lb. About $1.00 per serving, or $1.00 per 25 g of protein.
Sizes: 0.96 lb (14 servings), 2.73 lb (40 servings), 4.23 lb (62 servings), 7.03 lb (103 servings)
Flavors (5)
- Creamy Vanilla
- Cookies & Cream
- Strawberries & Cream
- Banana Cream
- Vanilla Salted Caramel
Sources
- https://www.theisopurecompany.com/products/flavored-protein-powder
- https://www.theisopurecompany.com/products/zero-low-carb-protein-powder
- https://www.theisopurecompany.com/products/flavored-protein-powder.js
- https://www.theisopurecompany.com/cdn/shop/files/US_ZeroCarb_7LB_CreamyVanilla_NFP_d7e7177b-43b1-496e-a7a0-f7ea811165b7.png
- https://www.theisopurecompany.com/products/unflavored-protein-powder
Nutrition and ingredients read from brand label image (Creamy Vanilla, 7 lb tub); label lists 'Natural and Artificial Flavor'. Flavor-to-formula mapping from brand image filenames (US_ZeroCarb_*). Prices/sizes from brand Shopify variant data 2026-10-13. Informed Choice lists an 'ISOPURE - LOW CARB' product whose batch flavors include Creamy Vanilla and Cookies & Cream, but no listing named Zero Carb, so no certification recorded. Chocolate Peanut Butter variant on brand site could not be assigned to Zero or Low Carb. Parent company per Glanbia 2014 acquisition; not re-verified for 2026.
Good to know
Last checked 2026-10-13. Labels change, so check the package before buying if you have allergies. If you are pregnant, nursing or buying for a child, ask your doctor before adding a supplement.