Sinew Nutrition · Whey

Isocore91 100% Whey Protein Isolate (Vanilla)

Elite. This is what every label wishes it were.

A89/100
they shout
“91% protein”
what’s true
91 g protein, 96% of calories. Grade A.
protein / 100 g
91 g
96% of calories · lean
₹100 buys
27 g
of protein
sugar
1 g
none added
price
₹999
300 g (0.66 lb)

How it scored 89/100

DENSITY96% of calories are protein25/25
QUALITYamino score 1, Complete20/20
DOSE1 scoop (30 g) = 27.3 g15/15
VALUE₹73 per usable 20 g12.1/20
CLEANno added sugar17/20

The deeper science

quality · DIAAS
1.09
Excellent
leucine / serving
3 g
clears the 2.7 g muscle trigger
planet / 20 g usable
587 g CO₂
Heavy footprint · 569 L water

What’s actually in it

first on the label · Whey protein isolate, added EAA/BCAA, flavour, sucralose, full list read.

⚠artificial flavour'Artificial flavouring substances' on the label. Not dangerous at these doses, just a sign the food needs a costume.

The fine print

Sucralose: Zero-calorie artificial sweetener. Regulators rate it safe at normal intake; a 2023 lab study flagged a trace impurity (sucralose-6-acetate) as genotoxic in cells. Doses there were far above what a scoop delivers.
FSSAI: 91 g/100 g · 23.9 g/100 kcal, may legally print “HIGH PROTEIN” via the per-100 g + per-100 kcal route.

More from Sinew Nutrition

all Sinew Nutrition →
AInstantised Whey Protein Isolate 92% (Unflavoured)Sinew Nutrition · 93/100ARaw Whey Protein Concentrate 79% (Unflavoured)Sinew Nutrition · 90/100BIntense Whey Protein for Beginners (Chocolate)Sinew Nutrition · 69/100

Better whey, same shelf

APure 100% Micellar Casein Protein (Unflavoured)Nutrabay · 93/100AWhey Protein Isolate (Unflavoured)The Whole Truth · 92/100AZero Carb 100% Whey Isolate (Unflavoured)Isopure · 92/100AZero Carb Isolate 95% (Unflavoured)AbbZorb Nutrition · 92/100APerformance Whey Isolate (Chocolate)Beyond Fitness · 91/100
Compare on the full index →How much protein do you need?

Graded by math, not brands. Macros are label/brand-listed (June 2026); not medical advice. ~ some side-macros estimated.