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A small mound of pale cream-colored protein powder sits on a surface, with a fine, dry, slightly grainy texture.
●Low GI
⚡High Potassium
💪High Protein
Optimum Nutrition· all products

Optimum Nutrition protein powder Calories

High-quality whey protein, popular for muscle growth and recovery

CALORIES · 100 G

390kcal

GI

35low

POTASSIUM · 100 G

400mg

FIBER · 100 G

0g

Quick answer

1 slice (medium) of Optimum Nutrition protein powder (30 g) has 117 calories. That works out to 390 calories per 100 g. It contains 2.4 g of carbs, 23.4 g of protein, 1.8 g of fat and 0 g of fiber. Its 105 mg of Phosphorus covers 15% of the Daily Value. Its glycemic index is 35 (low), so it raises blood sugar slowly.

Optimum Nutrition protein powder Nutrition Facts

Selected: 1 slice (medium) · 30 g

117

KCAL / 30G

Carbs

2.4g

· 1% DV

Protein

23.4g

· 47% DV

Fat

1.8g

· 2% 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 8% · Protein 78% · Fat 14%

Optimum Nutrition protein powder nutrition facts table · 1 slice (medium) (30 g)

NutrientAmount% DV
Calories117 kcal
Total fat1.8 g2%
Saturated fat1.05 g5%
Trans fat0 g
Sodium60 mg3%
Total carbohydrate2.4 g1%
Fiber0 g0%
Protein23.4 g47%

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 Slice of Optimum Nutrition protein powder?

ServingAmountCalories
1 slice (medium)30 g117 kcal
1 tablespoon (small)10 g39 kcal
2 tablespoon (medium)20 g78 kcal
1 serving (medium)32 g125 kcal
1 slice (large)45 g176 kcal
1 cup (large)80 g312 kcal
100 g100 g390 kcal
1 pack (jumbo)900 g3510 kcal

Calculated from 390 calories per 100 g.

Frequently Asked Questions About Optimum Nutrition protein powder

What is Optimum Nutrition protein powder?

Optimum Nutrition protein powder is a whey-based supplement commonly used to add a convenient protein source to meals or snacks. The brand sells different formulas, so ingredients and protein types can vary between products.

How much Optimum Nutrition protein powder should you take per day?

The amount of Optimum Nutrition protein powder to use depends on how much protein you already get from food and the serving directions for your specific product. More scoops are not automatically better; use it to fill a gap rather than replace meals.

When should you take Optimum Nutrition protein powder?

You can take Optimum Nutrition protein powder whenever it helps you meet your protein needs. Many people use it after a workout for convenience, but taking it immediately after exercise is not essential.

Can you mix Optimum Nutrition protein powder with milk?

Yes, you can mix Optimum Nutrition protein powder with milk. It makes a creamier shake, while water produces a lighter one. If dairy tends to upset your stomach, mixing it with water may be more comfortable.

Does Optimum Nutrition protein powder help build muscle?

Optimum Nutrition protein powder can support muscle growth by helping you get enough protein, but it does not build muscle on its own. Progressive resistance training, adequate food, and recovery are also needed.

Does Optimum Nutrition protein powder contain creatine?

Standard Optimum Nutrition whey protein products are protein supplements, not creatine supplements. The brand has multiple product lines, so check the ingredient list of the specific product if you want to confirm whether it contains added creatine.

What is the difference between Optimum Nutrition Gold Standard whey and whey isolate?

Optimum Nutrition Gold Standard 100% Whey is generally a blend of whey protein sources, including whey isolate, while a whey isolate product is centered on isolate. Formulas can differ by product and market, so compare the specific ingredient lists.

Can Optimum Nutrition protein powder cause bloating?

Yes, Optimum Nutrition protein powder can cause bloating in some people, particularly if they are sensitive to lactose in whey-based products or have a large serving at once. Symptoms can vary by formula and individual tolerance.

Can Optimum Nutrition protein powder replace a meal?

No, Optimum Nutrition protein powder is not a complete meal replacement. A shake can provide protein, but it may not supply the variety of foods and nutrients found in a balanced meal; use it as a supplement to food.

How can you tell if Optimum Nutrition protein powder is counterfeit?

Buy Optimum Nutrition protein powder from an authorized retailer and check that the packaging seal is intact and the product details look consistent. Authentication features vary by market, so use the brand’s official verification instructions when available.

Optimum Nutrition protein powder Vitamins & Minerals

Vitamins

B2

0.18mg · 14% DV

B12

0.15µg · 6% DV

B1

0.06mg · 5% DV

B6

0.06mg · 4% DV

Minerals

Phosphorus

105mg · 15% DV

Calcium

135mg · 14% DV

Magnesium

18mg · 4% DV

Potassium ⭐

120mg · 4% DV

Sodium

60mg · 3% DV

Optimum Nutrition protein powder Glycemic Index

GLYCEMIC INDEX

35
Low
0 Low5570100

GLYCEMIC LOAD

0.9
Low

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off Optimum Nutrition protein powder

To burn the 117 calories in 1 slice (medium) (30 g):

🚶

29min

Walking (5 km/h)

🏃

12min

Running (8 km/h)

🚴

16min

Cycling

🏊

14min

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 protein powder?

Optimum Nutrition protein powder is a packaged whey-based supplement, made to be mixed into a drink or added to food. Shaken with water or milk, it makes a smooth, milky shake; the flavour depends on the variety you choose.

People commonly use it after a workout, or stir it into breakfast foods such as oats or yoghurt. It is protein-rich, with 78 g of protein per 100 g. Mix it with water for a lighter shake, or blend it with milk and fruit when you want a more substantial snack.

How Nutritious Is Optimum Nutrition protein powder?

Nutrient density

High

65/ 100

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

Low

31/ 100

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 protein powder Processed?

NOVA 3

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 protein powder Contain Allergens?

Contains these allergens:

Gluten free
Dairy yes
Eggs free
Peanuts free
Tree nuts free
Fish free
Soy free
Sesame free

Which Diets Is Optimum Nutrition protein powder Good For?

Vegan

— Not suitable

Vegetarian

✓ Suitable

Gluten-Free

✓ Suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

✓ Suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

— Not suitable

Low FODMAP

— Not suitable

Optimum Nutrition protein powder Fat Profile

SATURATED

1.05g

MONOUNSATURATED

0.36g

POLYUNSATURATED

0.09g

⚖️

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.