Myprotein vs Bulk: Price Per Gram Comparison 2026

Myprotein vs Bulk — two of the biggest supplement brands in the UK market. If you're considering importing to the US or just curious about the comparison, here's the breakdown.

The numbers (March 2026, UK prices)

Product	Price	Weight	Protein/100g	£ per g protein
Bulk Pure Whey	£51.83	2500g	73g	£0.028
Myprotein Impact Whey	£61.49	2500g	73g	£0.034
Bulk Pure Whey Isolate 90	£89.99	2500g	88g	£0.041
Myprotein Impact Isolate	£110.99	2500g	82g	£0.054

Bulk wins on price — 21% cheaper per gram of protein than Myprotein.

Quality comparison

Both use similar whey concentrate with nearly identical protein percentages. The amino acid profiles are practically the same.

Key differences:

Flavors: Myprotein has 50+ options vs fewer but focused flavors from Bulk
Texture: Bulk mixes thicker
Sweetness: Myprotein is sweeter; Bulk is more subtle

Bottom line

Bulk is cheaper. Period. Both will build muscle just fine. Pick the one that fits your taste and budget.

Sources

Morton RW, et al. Br J Sports Med. 2018. PubMed