Casein Protein Powder

Recover strong and rest easy with the best casein protein in New Zealand.
From Optimum Nutrition Casein to Muscle Nation and Rule 1, these slow-release proteins fuel overnight recovery and help maintain lean muscle mass between meals. Rich in essential amino acids and designed for sustained absorption, casein is ideal before bed or during extended periods without food.

Shop premium casein protein brands at the best prices — only at Sprint Fit.