Prolific Isolate
G6 Sports Prolific Isolate is a whey isolate protein powder with 25 g of protein per 1 scoop (28.4 g). It scores 74/100 on the TBPP Quality Score. We found no third-party testing certification.
Nutrition per serving
Vanilla flavor, from the label.
| Serving size | 1 scoop (28.4 g) |
|---|---|
| Protein | 25 g |
| Calories | 100 |
| Carbohydrates | Not verified |
| Sugar | 0 g |
| Fat | 0 g |
| Sodium | 41 mg |
| Protein by weight | 88% |
| Leucine | 2.62 g |
| BCAAs | 5.37 g |
How it scored
74 of 100 points. How we score
| Criterion | Points | Why |
|---|---|---|
| Protein density | 30 / 30 | 88% 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 | 10 / 10 | Natural flavors and sweeteners |
| Verified label data | 4 / 5 | 6 of 7 label values verified |
Formula and label
| Type | Whey Isolate |
|---|---|
| Protein sources | Whey Protein Isolate |
| Third-party testing | None found |
| Sweeteners | Stevia |
| Proprietary blend | No |
| Added free amino acids | No |
| Dietary | Gluten-Free, Lactose-Free, Soy-Free, Non-GMO |
| Allergens | Milk |
| Made by | G6 Sports (SDC Nutrition) · USA |
| Sold at | G6 Sports Nutrition (direct), GNC |
Price
$99.99–$119.99 for 2.5 lb (40 servings). About $2.50 per serving, or $2.50 per 25 g of protein.
Sizes: 2.5 lb (40 servings), 30 servings (Mochaccino, Cookies N' Cream)
Flavors (6)
- Vanilla
- Chocolate
- Raspberry Gelato
- Chocolate Peanut Butter
- Mochaccino
- Cookies N' Cream
Sources
- https://g6sportsnutrition.com/
- https://g6sportsnutrition.com/products/prolific-isolate
- https://cdn.shopify.com/s/files/1/0107/9197/7018/files/G6_Prolific-2lb-Vanilla-right.png
- https://api.ods.od.nih.gov/dsld/v9/label/269021
- https://api.ods.od.nih.gov/dsld/v9/label/304370
- https://www.gnc.com/whey-protein/449545.html
- https://www.gnc.com/whey-protein/520829.html
Vanilla nutrition from the brand's label image and NIH DSLD 269021 (entered 2022-06-16, UPC 837654326206, on-market; 'STI, a Division of SDC Nutrition'): 1 scoop 28.4 g, 40 servings, 2.5 lb/1,134 g, 100 kcal, 0 g fat, 41 mg sodium, 0 g sugar, 25 g protein. The label prints total carbohydrate as '<1g' (DSLD records 1 g), so carbs_g is null. Ingredients: non-GMO micro-filtered whey isolate, natural flavors, xanthan gum, stevia; 'Contains milk and sunflower lecithin'. Leucine 2,616 mg and BCAAs (isoleucine 1,510 + leucine 2,616 + valine 1,240 mg) from the label's typical amino acid profile. Raspberry Gelato (DSLD 304370, 2023, manufacturer SDC Nutrition) has identical numbers. Gluten free, lactose free, non-GMO, soy-free whey are label claims. Prices from the brand store (2026-10-14): $119.99 for the 40-serving flavors, $99.99 for Mochaccino and Cookies N' Cream (GNC lists those two at 30 servings); the brand store calls the raspberry flavor 'Raspberry Sorbet'. GNC's 'SDC Nutrition Prolific Isolate' listing is this same product: G6 Sports is a brand of SDC Nutrition (Pittsburgh), which DSLD and the label name as manufacturer, so no separate record was made.
Good to know
Last checked 2026-10-14. 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.