Protein · head-to-head
MyProtein Impact Whey vs Warrior Whey.
Our independent head-to-head review of MyProtein Impact Whey Protein Powder and Warrior Whey Protein Powder, scored on value, protein density, macros and ingredient quality so you don't have to guess which to buy.
What a scoop actually contains
Protein is 72% of the scoop
- Protein
- 21.6 g
- (72%)
- Carbs
- 2.7 g
- (9%)
- Fat
- 1.8 g
- (6%)
- Other
- 4.0 g
- (13%)
Protein is 71% of the scoop
- Protein
- 17.8 g
- (71%)
- Carbs
- 1.9 g
- (8%)
- Fat
- 0.6 g
- (2%)
- Other
- 4.7 g
- (19%)
WheyWise verdict
Warrior Whey Protein Powder wins for most buyers.
Runner-upPrefer MyProtein Impact Whey Protein Powder? It is the second pick here, not a bad one.
- 71.2g protein per 100g - matches MyProtein on density
- Price floor of £1.70/100g, roughly 30% below MyProtein’s cheapest
- Overall score 81 - tops MyProtein on taste and effectiveness
How the numbers stack up against the price
MyProtein Impact Whey Protein Powder and Warrior Whey Protein Powder sit at the budget end of the UK whey concentrate market but take very different approaches to pricing and product range. MyProtein Impact Whey Protein Powder delivers 72g of protein per 100g backed by an enormous catalogue of 48 flavours and bag sizes from 345g right up to 5kg, with near-constant MyProtein discount codes that regularly push it to around £2.42/100g. Warrior Whey Protein Powder counters with 71.2g of protein per 100g, only 11 flavours, and three bag sizes, but a price floor that drops to £1.70/100g during Warrior sales - well below anything MyProtein has matched in Q2 2026.
Cost per 25g protein
Lower is better
Protein per scoop
Higher is better
Carbs per scoop
Lower is better
Fat per scoop
Lower is better
Protein density
Higher is better
WheyWise score
Out of 5
Warrior Whey Protein Powder takes the value edge here.
On protein density they are effectively identical, but Warrior’s best sale prices run roughly 30% cheaper per gram of protein than MyProtein’s cheapest. The trade-off is range - MyProtein Impact Whey Protein Powder wins on flavour choice (48 vs 11) and offers a 5kg option for serious bulk buyers, and MyProtein’s reformulated flavours have picked up a loyal following. If you want maximum variety and you are happy to stalk discount codes, MyProtein Impact Whey Protein Powder is fine. If you want the lowest cost per gram of protein without gaming promo calendars, Warrior Whey Protein Powder is the cleaner choice.
Where each one wins
Cheaper per serving of protein
Takes cost per 25g protein, protein per scoop and protein density.
WheyWise pick
Takes carbs per scoop and fat per scoop.
Neither of these quite right?
Answer five questions about your goal, budget and diet, and the Protein Finder ranks the whole range against them, with the reason each pick won.