When we’re talking about complete proteins – the best for building muscle – there are those on the slow digesting side, and those on the fast digesting side. Whey is the de facto king of the fast digesters, and Casein the king of the slow digesters. If you want the best out of your nutrition, you must use each protein to its strengths. That’s where Optimum Nutrition Gold Standard 24 Pak comes in.

In this pack you have the very best of both worlds. A 2lb tub of Optimum’s famous Gold Standard 100% Whey, and a 2lb tub of their Gold Standard 100% Casein.

What you have, then, are the two most ideal sources of protein for two very different times: Whey for breakfast, pre-workout and post-workout when you need it to be rapidly digested, and Casein for the most important muscle-building time of the day: bedtime (or other times you may need sustained nutritional release).

Gold Standard 100% Whey has 24g of whey protein per scoop, and Gold Standard 100% Casein also has 24g.

Each Optimum Nutrition Gold Standard 24 Pak comes with a shaker bottle.

Available flavors are: Chocolate and Vanilla.