Pro Performance 100% Casein
GNC Pro Performance Pro Performance 100% Casein is a casein protein powder with 25 g of protein per 1 scoop (33.8 g). It scores 82/100 on the TBPP Quality Score. It is Informed Choice.
Nutrition per serving
Chocolate Supreme flavor, from the label.
| Serving size | 1 scoop (33.8 g) |
|---|---|
| Protein | 25 g |
| Calories | 120 |
| Carbohydrates | 2 g |
| Sugar | 0 g |
| Fat | 1 g |
| Sodium | 240 mg |
| Protein by weight | 74% |
| Leucine | Not verified |
| BCAAs | Not verified |
How it scored
82 of 100 points. How we score
| Criterion | Points | Why |
|---|---|---|
| Protein density | 22 / 30 | 74% of each scoop is protein |
| Third-party testing | 15 / 25 | Independently tested for contaminants or label accuracy |
| 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 | 5 / 5 | 7 of 7 label values verified |
Formula and label
| Type | Casein |
|---|---|
| Protein sources | Micellar Casein |
| Third-party testing | Informed Choice |
| Sweeteners | Sucralose |
| Proprietary blend | No |
| Added free amino acids | No |
| Dietary | Gluten-Free, Soy-Free |
| Allergens | Milk |
| Made by | GNC Pro Performance (GNC Holdings) · USA |
| Sold at | GNC |
Price
$59.99 for 25 servings. About $2.40 per serving, or $2.40 per 25 g of protein.
Sizes: 25 servings
Flavors (2)
- Chocolate Supreme
- Vanilla Cream
Sources
- https://www.gnc.com/casein-protein/739952.html
- https://www.gnc.com/casein-protein/739953.html
- https://api.ods.od.nih.gov/dsld/v9/label/259621
Nutrition from the Chocolate Supreme tub back-label image and label text on GNC.com item 739952 (2026-10-14): 1 scoop 33.8 g, 25 servings, 120 kcal, 1 g fat, 2 g carbs, total sugars <1 g (recorded as 0), 240 mg sodium, 25 g protein. Ingredients: micellar casein, cocoa, salt, sunflower lecithin, natural flavor, guar gum, sucralose, gum acacia, xanthan gum; Contains: milk. Label states no artificial colors or flavors, no sugar added, gluten free; GNC.com adds no soy. $59.99 for 25 servings, both flavors (schema.org offers). Informed Choice per GNC.com footnote.
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.