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Side by side

Bulk Vegan Protein Powder vs Myprotein Impact Whey Protein

The published reviews of Bulk Vegan Protein Powder and Myprotein Impact Whey Protein, lined up: the five scores, what one serving delivers against the studied dose, the real cost per serving and what each label leaves out. Figures as of 28 September 2026.

The short answer

Myprotein Impact Whey Protein scores 7.6/10 against Bulk Vegan Protein Powder's 7.4. The widest gap is dose against the studied amount: 7 for Bulk Vegan Protein Powder, 8 for Myprotein Impact Whey Protein.

Pick Bulk Vegan Protein Powder if…

  • tolerability and a well-characterised safety record come first

Pick Myprotein Impact Whey Protein if…

  • you want a product with a third-party certification
  • you want a serving that matches the amount used in research
  • you want better value against the plain generic version

Criterion by criterion

The five criteria every review is scored on, published on the grading page. The overall score is their average.

Evidence for the marketed claim

How strong the research is for what the product is actually sold to do — not for the ingredient in general.

Bulk Vegan Protein Powder8/10
Myprotein Impact Whey Protein8/10

Dose against the studied amount

Whether one serving delivers the amount used in the research behind the claim.

Bulk Vegan Protein Powder7/10
Myprotein Impact Whey Protein8/10Leads

Label transparency

Whether the Supplement Facts panel is published in readable text and every active amount is disclosed.

Bulk Vegan Protein Powder6/10
Myprotein Impact Whey Protein6/10

Value against the generic equivalent

Cost per gram or per dose of the active ingredient, compared with the plainest version of the same thing.

Bulk Vegan Protein Powder8/10
Myprotein Impact Whey Protein9/10Leads

Safety and tolerability

Known risks and interactions, how well characterised they are, and whether the label warns about them.

Bulk Vegan Protein Powder8/10Leads
Myprotein Impact Whey Protein7/10

Dose against the studied amount

What one labelled serving delivers, placed against the range on each ingredient’s evidence page. Where a label gives no figure, there is nothing to place, and that is the finding.

Whey protein blendEvidence A

Where muscle protein synthesis maxes out: 20–25 g a dose

  • Bulk Vegan Protein PowderNot in the formula
  • Myprotein Impact Whey Protein22 g protein per 30 g serving (vanilla, Original)In range

Rebaudioside A (stevia)Evidence D

No single studied range in label units, so amounts are shown but not placed.

  • Bulk Vegan Protein PowderNot stated
  • Myprotein Impact Whey ProteinNot in the formula

What it actually costs

Price divided by labelled servings, from a dated listing. A serving is whatever the label calls one, which is why the studied-dose row matters more than the headline figure.

  • Bulk Vegan Protein PowderFrom £9.99 at Bulk for the smallest pack; about £1.56 per 100 g for the 5 kg bag on a UK price tracker, read on 28 September 2026. No per-serving figure: servings not recorded.
  • Myprotein Impact Whey Protein£1.10 a serving · £32.99 for 30 servings at Myprotein, checked 22 Sept 2026

Label checks

What each label discloses, and what it leaves out. Read from the reviews, not from the marketing.

Bulk Vegan Protein Powder

  • Every active ingredient has a stated amount
  • No third-party certification

Myprotein Impact Whey Protein

  • Every active ingredient has a stated amount
  • Carries a third-party certification

How this comparison is built

  • Scores are the ones already published in each review. Nothing is re-scored for the comparison, and a product leads a criterion only when it outscores the rest.
  • Doses are read from the label rows in each review and placed against the studied range on the matching ingredient page. A figure that is not printed is never estimated.
  • Costs use a dated retailer price divided by labelled servings. Prices in different currencies are never ranked against each other.
  • Only products in the same category, or ones a review names as an alternative, can be compared. Commission never changes what appears here.

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