Which protein has the least lactose?
If you’re sensitive to lactose, here’s how protein powders compare:
- Whey Protein Isolate (WPI): Contains the lowest lactose of all dairy-based proteins, as most of the lactose is filtered out during processing.
- Plant-based proteins (like pea, rice, or fava bean): Naturally lactose-free, making them ideal for dairy-free diets.
- Marine or bovine collagen: Also completely lactose-free.
So if you want to keep lactose to a minimum, whey isolate is the best dairy option, while plant-based proteins and collagen are 100% free from lactose.