AMP Sustained Protein Blend
GNC AMP AMP Sustained Protein Blend is a milk protein protein powder with 25 g of protein per About 1 scoop (33.5 g). It scores 78/100 on the TBPP Quality Score. It is Informed Choice and Informed Protein.
Nutrition per serving
Cinnamon Toast flavor, from the label.
| Serving size | About 1 scoop (33.5 g) |
|---|---|
| Protein | 25 g |
| Calories | 130 |
| Carbohydrates | 3 g |
| Sugar | 1 g |
| Fat | 2 g |
| Sodium | 55 mg |
| Protein by weight | 75% |
| Leucine | Not verified |
| BCAAs | Not verified |
How it scored
78 of 100 points. How we score
| Criterion | Points | Why |
|---|---|---|
| Protein density | 22 / 30 | 75% 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 | 1 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 | Milk Protein |
|---|---|
| Protein sources | Whey Protein Concentrate, Micellar Casein, Milk Protein Isolate, Hydrolyzed Whey Protein |
| Third-party testing | Informed Choice, Informed Protein |
| Sweeteners | Sucralose |
| Proprietary blend | No |
| Added free amino acids | No |
| Dietary | Gluten-Free, Soy-Free |
| Allergens | Milk |
| Made by | GNC AMP (GNC Holdings) · USA |
| Sold at | GNC |
Price
$49.99–$59.99 for 26 servings. About $1.92 per serving, or $1.92 per 25 g of protein.
Sizes: 26 servings, 28 servings
Flavors (6)
- Cinnamon Toast
- Fruity Crisps
- Peanut Butter Puffs
- Chocolate Milkshake
- Vanilla Milkshake
- Strawberry Milkshake
Sources
- https://www.gnc.com/whey-protein/739991.html
- https://www.gnc.com/whey-protein/414773.html
- https://www.gnc.com/disco-offline/414775.html
- https://api.ods.od.nih.gov/dsld/v9/label/317624
Nutrition from the Cinnamon Toast 26-serving label text on GNC.com item 739991 (2026-10-14): about 1 scoop 33.5 g, 130 kcal, 2 g fat, 3 g carbs, 1 g sugar (0 g added), 55 mg sodium, 25 g protein. Ingredients: whey protein concentrate, micellar casein, milk protein isolate, hydrolyzed whey protein, creamer (contains sodium caseinate), natural flavor, sucralose; Contains: milk. Older 28-serving Peanut Butter Puffs listing (414775) uses natural and artificial flavors plus acesulfame K, so flavor_system is mixed across the line. Prices from GNC.com schema.org offers: $59.99 for 26-serving tubs; 28-serving tubs $49.99-$59.99. Informed Choice and Informed Protein per GNC.com footnotes; gluten-free, no soy per GNC.com. Leucine not stated.
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.