Is casein really better than whey at night?

For overnight windows, yes — casein's slow gastric emptying keeps amino acids elevated for 7–8 hours vs whey's 2–3 hours. If you eat a protein-rich dinner close to bed, the gap narrows.

Nutrascia's recovery category combines Fast-D Carb (post-workout glycogen replenishment) and Advanced Casein (overnight slow-release protein) to cover the two highest-leverage recovery windows of the 24-hour day.