Optimum Nutrition Gold Standard 100% Casein - Chocolate 4lb

What it is

Optimum Nutrition Gold Standard 100% Casein is a slow-digesting micellar casein that releases amino acids steadily over several hours, making it ideal before bed to support overnight muscle recovery. Each serving provides 24g of protein and is low in sugar. This 4lb tub in Chocolate provides about 53 servings.

Chocolate is the more forgiving of the two flavours if you tend to mix your shake with plain water rather than milk.

Who it's for

Regular lifters who want a protein for the gap before sleep or between long stretches without food, and who know they'll get through a large tub.

How to use it

Mix one scoop with water or milk before bed or between meals.

Worth knowing

It's a milk protein, so it's out if you're dairy-free or vegan — worth asking us in store rather than guessing. It's also not the one to reach for straight after training; whey suits that better.

Our take

Casein is the one we point people to for before bed rather than around training — it releases slowly, where whey is the faster option. This 4lb chocolate tub is about 53 servings, so it's the buy for someone already taking it nightly. If you're new to slow-release protein, ask us in store whether the smaller 2lb tub is on the shelf first.

More in this range

In stock

Optimum Nutrition Gold Standard 100% Casein - Vanilla 4lb

Ask us

Optimum Nutrition Gold Standard 100% Casein - Chocolate 2lb