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Certified Grass-fed Whey Protein Isolate

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Let’s be clear: This is not just a single ingredient protein...

...this is the best ingredient protein.

At Centenarius, we are proud to present the only whey protein isolate available today that is:

  • Truly Certified Grass-Fed 
  • From pasture raised animals
  • Heavy Metals Tested
  • Native Undenatured
  • Easily digestible
  • Hormone free
  • Additive free
  • Lactose-free
  • Gluten-free
  • Soy free


Centenarius offers exceptionally clean flavor alongside an incredibly fast metabolizing boost of power with 27g of pure protein. This lactose-free, unsweetened whey protein isolate is without any additives or fillers – providing zero bloating or aftertaste, all with superior results and outstanding flavor that mixes with anything.

Our Whey Protein Isolate is drastically ahead of the competition compared to any other protein product on the market. Our whey protein isolate is derived directly from Truly Grass-Fed Irish dairy.  

Centenarius delivers unmatched purity, undeniable results, and the peace of mind that can only come with a product that is sourced purely, ethically and sustainably from small farms within the virgin fields of Ireland.

Our patented ice cold cross flow micro-filtration system removes all fat, carbs and lactose ensuring a non-bloating and easily digestible form of protein, that is beyond clean. Superior quality with a better amino acid profile and more calcium. 

This ultra efficient protein is designed to increase power, fuel workouts, build lean muscle, promote weight loss, and aid in recovery. All without any additional fillers, flavorings, sweeteners and processed ingredients that are best to avoid.

Unsurpassed purity, absorption and effectiveness. 

It's not only the quality of what you put in, it's what you leave out!