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Optimum Nutrition Isolate Protein Powder Calories
High-protein whey isolate supplement
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
Quick answer
1 serving (medium) of Optimum Nutrition Isolate Protein Powder (31 g) has 110 calories. That works out to 355 calories per 100 g. It contains 1 g of carbs, 25 g of protein, 0.5 g of fat and 0 g of fiber. Its 110.1 mg of Phosphorus covers 16% of the Daily Value. Its glycemic index is 20 (low), so it raises blood sugar slowly.
Optimum Nutrition Isolate Protein Powder Nutrition Facts
Selected: 1 serving (medium) · 31 g
110
KCAL / 31G
Carbs
1g
· 0% DV
Protein
25g
· 50% DV
Fat
0.5g
· 1% DV
Fiber
0g
· 0% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 4% · Protein 92% · Fat 4%
Optimum Nutrition Isolate Protein Powder nutrition facts table · 1 serving (medium) (31 g)
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 110 kcal | |
| Total fat | 0.5 g | 1% |
| Saturated fat | 0.2 g | 1% |
| Trans fat | 0 g | |
| Sodium | 100 mg | 4% |
| Total carbohydrate | 1 g | 0% |
| Fiber | 0 g | 0% |
| Protein | 25 g | 50% |
Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.
Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.
Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.
Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.
Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.
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How Many Calories in 1 Serving of Optimum Nutrition Isolate Protein Powder?
| Serving | Amount | Calories |
|---|---|---|
| 1 serving (medium) | 31 g | 110 kcal |
| 1 teaspoon (small) | 5 g | 18 kcal |
| 1 tablespoon (medium) | 10 g | 36 kcal |
| 2 tablespoon (double) | 20 g | 71 kcal |
| 1 serving (large) | 40 g | 142 kcal |
| 2 serving (double) | 62 g | 220 kcal |
| 100 g | 100 g | 355 kcal |
| 1 cup (large) | 100 g | 355 kcal |
Calculated from 355 calories per 100 g.
Frequently Asked Questions About Optimum Nutrition Isolate Protein Powder
What is Optimum Nutrition Isolate Protein Powder made from?
Optimum Nutrition Isolate Protein Powder is a whey-based supplement whose main protein source is whey protein isolate. Whey comes from milk, and the exact ingredient list can vary by flavour or product version.
How do you mix Optimum Nutrition Isolate Protein Powder?
Mix one serving of Optimum Nutrition Isolate Protein Powder into water or milk and shake until blended. Adding the liquid first can help reduce clumping; follow the serving directions on your particular tub.
Is Optimum Nutrition Isolate Protein Powder better with water or milk?
Optimum Nutrition Isolate Protein Powder works with either water or milk. Water makes a lighter drink, while milk gives it a creamier taste. Choose the one that suits your preferred texture and routine.
When should you take Optimum Nutrition Isolate Protein Powder?
You can take Optimum Nutrition Isolate Protein Powder whenever it helps you meet your protein needs. Many people have it after exercise, but there is no requirement to drink it immediately after a workout.
How is Optimum Nutrition Isolate Protein Powder different from Gold Standard 100% Whey?
Optimum Nutrition Isolate Protein Powder uses whey protein isolate as its main protein source, while Gold Standard 100% Whey may include other whey protein types as well. Ingredients can vary by flavour and product version.
Does Optimum Nutrition Isolate Protein Powder contain lactose?
Optimum Nutrition Isolate Protein Powder is made from milk-derived whey, and whey isolates generally contain less lactose than whey concentrates. That does not guarantee it is lactose-free, so check the specific product’s ingredient information if you are sensitive.
Does Optimum Nutrition Isolate Protein Powder contain creatine?
No, Optimum Nutrition Isolate Protein Powder is a whey protein supplement, not a creatine product. Its main purpose is to provide protein; creatine is a separate supplement.
Can you bake with Optimum Nutrition Isolate Protein Powder?
Yes, Optimum Nutrition Isolate Protein Powder can be added to recipes such as pancakes or baked goods. Heat can affect texture, so start with a small amount and adjust the recipe’s liquid as needed.
Can you take Optimum Nutrition Isolate Protein Powder without working out?
Yes, you can use Optimum Nutrition Isolate Protein Powder on rest days or without a workout. Exercise is not required; it can simply add protein when your meals do not provide enough for your needs.
Is Optimum Nutrition Isolate Protein Powder a meal replacement?
No, Optimum Nutrition Isolate Protein Powder is a protein supplement, not a complete meal replacement. It does not provide the range of foods and nutrients found in a balanced meal, so use it alongside meals rather than as their automatic substitute.
Optimum Nutrition Isolate Protein Powder Vitamins & Minerals
Vitamins
B12
0.09µg · 4% DV
B2
0.04mg · 3% DV
B5
0.09mg · 2% DV
B6
0.03mg · 2% DV
Minerals
Phosphorus
110mg · 16% DV
Calcium
140mg · 14% DV
Selenium
3.72µg · 7% DV
Potassium ⭐
150mg · 4% DV
Sodium
100mg · 4% DV
Optimum Nutrition Isolate Protein Powder Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
How to Burn Off Optimum Nutrition Isolate Protein Powder
To burn the 110 calories in 1 serving (medium) (31 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
What is Optimum Nutrition Isolate Protein Powder?
Optimum Nutrition Isolate Protein Powder is a whey-based supplement made from milk protein that has been separated into an isolate. It is mixed with water or milk, and its flavour depends on the variety; it can also be blended into other foods rather than taken as a shake.
People commonly use it after exercise or as a convenient addition to breakfast, smoothies, porridge or yoghurt. It is notably protein-dense, with 80.6 g of protein per 100 g. A serving is about 31 g. For a more substantial snack, pair it with fruit or oats; mixing it with water keeps the drink lighter, while milk makes it creamier.
How Nutritious Is Optimum Nutrition Isolate Protein Powder?
Nutrient density
Medium
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Satiety score
Medium
An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.
Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.
Is Optimum Nutrition Isolate Protein Powder Processed?
NOVA 4
Ultra-Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
Does Optimum Nutrition Isolate Protein Powder Contain Allergens?
Contains these allergens:
Which Diets Is Optimum Nutrition Isolate Protein Powder Good For?
Vegan
— Not suitable
Vegetarian
✓ Suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
— Not suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
— Not suitable
Low FODMAP
— Not suitable
Optimum Nutrition Isolate Protein Powder Fat Profile
SATURATED
0.2g
MONOUNSATURATED
0.09g
POLYUNSATURATED
0.03g
Omega 6:3 ratio 2:1
Below the ideal 4:1 — a good omega balance.
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Nutrition data compiled from USDA FoodData Central and scientific sources.