Optimum Nutrition Serious Mass - Vanilla 12lb

What it is

Optimum Nutrition Serious Mass is a high-calorie weight gainer delivering around 1,250 calories and 50g of protein per two-scoop serving, plus over 250g of carbohydrates and added creatine, glutamine and vitamins, to help hard-gainers build size and mass. It is best used alongside your regular meals to reach a calorie surplus. This 12lb tub in Vanilla provides about 16 servings.

Vanilla is the one to buy if you will be adding fruit, peanut butter or coffee; the 12lb runs to about sixteen servings.

Who it's for

The classic skinny hard-gainer who trains but cannot eat enough, and needs calories in liquid form between meals rather than another protein shake.

How to use it

Blend two scoops with water or milk once or twice a day between meals or after training.

Worth knowing

Contains milk. It is a deliberate calorie surplus, so avoid it if fat loss is the goal, and mix with water rather than milk if the calorie count already feels like plenty.

Our take

This is the heavyweight of the shelf: around 1,250 calories per two-scoop serving, with creatine, glutamine and vitamins included, which is why genuine hard-gainers usually end up here. Start on half a serving for the first week — a full two scoops sits heavily on a stomach that is not used to it.

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