Note: different product types
You're comparing products of different types (e.g. isolate vs concentrate). This makes a fair comparison difficult.
Optimum Nutrition Gold Standard 100% Isolate vs XXL Nutrition Whey Protein Zero
Fair comparison based on price per gram of protein, quality and more.
Verdict
XXL Nutrition Whey Protein Zero is the better deal at £0.048/g
| Property | ![]() Optimum Nutrition Gold Standard 100% Isolate | ![]() XXL Nutrition Whey Protein Zero Best value |
|---|---|---|
| Price | £61.90 | £37.99 |
| Weight | 930g | 1000g |
| Price per gram protein | £0.080 | £0.048 |
| Price per kg | £66.56 | £37.99 |
| Protein per shake | 25g | 24g |
| Protein percentage | 83% | 79% |
| Calories per shake | 100 kcal | 115 kcal |
| Type | Isolate | Concentrate |
| Servings | 31 | 33 |
| Rating | 4.8 (4800 reviews) | 4.8 (4 reviews) |

Optimum Nutrition Gold Standard 100% Isolate
- Price
- £61.90
- Weight
- 930g
- Price per gram protein
- £0.080
- Price per kg
- £66.56
- Protein per shake
- 25g
- Protein percentage
- 83%
- Calories per shake
- 100 kcal
- Type
- Isolate
- Servings
- 31
- Rating
- 4.8 (4800 reviews)

XXL Nutrition Whey Protein Zero
Best value- Price
- £37.99
- Weight
- 1000g
- Price per gram protein
- £0.048
- Price per kg
- £37.99
- Protein per shake
- 24g
- Protein percentage
- 79%
- Calories per shake
- 115 kcal
- Type
- Concentrate
- Servings
- 33
- Rating
- 4.8 (4 reviews)

Optimum Nutrition Gold Standard 100% Isolate
Ultra-pure whey isolate with 25g protein per serving. Fast-absorbing, low in fat and sugar.
Pros
- ✓ 25g pure whey isolate
- ✓ Fast absorbing
- ✓ Low in fat and sugar
Cons
- ✗ Premium price
Rate this product
Via Optimum Nutrition★4.8(4,800 ratings)
100%Via WheyWijzerNo community ratings yet
0%Is this product good?

XXL Nutrition Whey Protein Zero
Lactose-free whey concentrate. Ideal for lactose intolerance.
Pros
- ✓ Lactose-free
- ✓ Easy to digest
- ✓ Good taste
Cons
- ✗ Slightly higher price
Rate this product
Via XXL Nutrition★4.8(4 ratings)
100%Via WheyWijzerNo community ratings yet
0%Is this product good?