Whey Protein
Whey protein is a complete protein isolated from the liquid byproduct of cheese manufacturing. It provides all nine essential amino acids in high bioavailable concentrations and is digested rapidly, making it one of the most widely studied and utilized protein supplements for athletic performance and general health.
Research Evidence
Increases muscle protein synthesis and supports lean mass gains when combined with resistance training
StrongSupports body composition improvements including fat loss during caloric restriction
ModerateMay enhance bone mineral density through improved calcium absorption and IGF-1 signaling
ModerateImproves post-exercise recovery and reduces markers of muscle damage
StrongCan help regulate appetite and promote satiety compared to other macronutrients
ModerateExpert Evidence
72 references from 6 experts
Safety & Cautions
Side Effects
- Bloating or gas
- Digestive discomfort in lactose-sensitive individuals
- Acne exacerbation in susceptible people
- Possible kidney strain at excessive doses in those with pre-existing renal conditions
Whey protein is generally well-tolerated by most people at standard doses. Those with dairy allergies or severe lactose intolerance should opt for whey isolate or consider alternative protein sources, and individuals with kidney disease should consult a physician before significantly increasing protein intake.
Pairs Well With
Price Comparison
From $1.25/ct
N
NutricostBest Value
4.4
•65 ct$1.25/ct
$80.95 total
N
NOW Sports
4.5
•25 ct$1.48/ct
$36.99 total
D
Dymatize
4.6
•20 ct$1.42/ct
$28.42 total
M
Momentous
4.4
•25 ct$2.40/ct
$59.95 total
A
Ancient Nutrition
4.5
•20 ct$2.75/ct
$54.95 total
F
FlavCity
4.3
•20 ct$3.00/ct
$59.99 total
O
Optimum Nutrition
4.6
•24 ct$2.66/ct
$63.74 total