What is the difference between WPI and WPC?Updated 7 days ago
It’s the most common question we hear at True, and for good reason! While both Whey Protein Isolate (WPI) and Whey Protein Concentrate (WPC) are premium, grass-fed dairy proteins, the difference lies in the level of refinement.
The Main Difference: Filtration Think of WPI as the 'refined' sibling of WPC. Both start at the same source, but WPI undergoes an advanced extra filtration step.
WPC (Whey Protein Concentrate): This is the most natural form of whey. It contains roughly 80% protein, with the remaining 20% made up of healthy fats, minerals, and a small amount of lactose. It has a slightly creamier taste and is often more budget-friendly.
WPI (Whey Protein Isolate): That extra filtration strips away almost all the fat and lactose, resulting in a 90% protein concentration. This makes it one of the purest protein sources available, with virtually zero carbs or fats.
How to decide:
Check Your Digestion: Because WPI is virtually lactose-free, it best for those with sensitive stomachs or dairy intolerances.
Count Your Macros: If you are on a strict low-carb or low-fat diet, WPI's purity makes it easier to hit your protein goals without the extra calories.
Prioritize Texture: WPC is slightly thicker and creamier, making it a favorite for smoothies and oats, while WPI is thinner and absorbs incredibly fast—perfect for immediate post-workout recovery.
The Bottom Line: You can’t go wrong with either. Both provide the full spectrum of amino acids needed for muscle repair. Your choice simply depends on your gut, your goals, and your budget.
You can read more about this here:
Whey Protein Isolate & Concentrate: What's the Difference? – True Protein