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Protein Water

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What is protein water?

Protein water is clear whey isolate, a form of whey treated so that it stays transparent and does not turn milky in water. The result mixes thin and fruity rather than creamy, closer to a cordial or a sports drink than a milkshake, and it is usually fat free with very little carbohydrate. A serve commonly provides 20 to 25 g of protein.

It exists for people who want the protein but not the thickness. If a creamy shake feels heavy in warm weather, straight after a hard session, or alongside a meal, a clear protein is far easier to get through. It is the same whey isolate underneath, so the protein quality is not a compromise.

Why shop protein water at Supplement Mart?

  • 36 protein waters and clear proteins in stock
  • 58 stores nationwide, with click and collect available
  • Free shipping Australia-wide on orders over $150, with no surcharges
  • East and west coast dispatch on orders placed before 2pm on weekdays
  • Supplement Mart Rewards, earning points on every dollar spent
  • An in-house nutritionist you can actually ask a question

How it is usually used

One scoop in 400 to 500 ml of cold water, more liquid than a regular shake, and it is best cold. Many people sip it through a session rather than drinking it in one go. Avoid mixing it with milk, which defeats the point and tends to curdle with the fruit flavours.

Frequently asked questions

Is protein water the same as normal whey protein?

Underneath, yes. Clear proteins are made from whey protein isolate, so the amino acid profile and protein quality are the same as a regular isolate. The difference is processing that keeps it clear and soluble in water, which changes the texture and flavour rather than the nutrition.

How much protein is in a serve?

Usually 20 to 25 g per scoop, comparable to a standard isolate serve. Protein waters are typically fat free and very low in carbohydrate, so the kilojoule count per serve is often lower than a creamy shake.

Why does it taste fruity rather than creamy?

Because there is no milk fat in it. Creaminess in a protein shake comes from the fat and lactose that isolate filtration removes, and clear whey removes even more. That leaves a thin base which suits citrus and berry flavours, and is why you rarely see chocolate in this category.

Can I mix protein water with milk?

Better not to. The fruit flavours used in clear proteins are acidic, and acid plus milk tends to curdle. It also removes the reason to buy a clear protein in the first place. Use cold water.

Is it good for hot weather or endurance training?

It suits both better than a creamy shake. It goes down easily when you are hot, and because it is thin you can sip it across a long session rather than drinking it all at once. Some products add electrolytes for that reason, though a dedicated hydration product will carry more.

Sources

Last reviewed: 10 October 2026