Protein powders and shakes

Adults need about 0.75g of protein per kilogram of body weight a day, which most people in the UK already eat.

By the Supplements UK editorial team. Last checked 9 October 2026. General information, not medical advice.

Short answer Adults need about 0.75g of protein per kilogram of body weight a day, which most people in the UK already eat. A protein powder is a convenience, useful if you train hard, eat little, or want an easy high-protein snack.

Types of protein

Protein sources
SourceNotes
WheyFrom milk; complete; mixes well
CaseinFrom milk; digests slowly
EggComplete; dairy-free
Pea, soy, ricePlant-based; blends improve the amino acid profile

What to check

Protein per serving, sugar and sweeteners, the serving size the numbers are based on, and whether it is batch-tested if you compete in sport.

Shake or meal replacement?

They are different things. A meal replacement must meet set rules on calories, protein, vitamins and minerals. Oriflame describes its Natural Balance Shake as a high-protein snack, with 7.3 to 7.7g of protein per serving from whey, egg and pea plus fibre. See weight management.

Keep exploring

Questions people ask

How much protein do I need?

About 0.75g per kilogram of body weight a day for most adults.

Is protein powder necessary?

No. It is a convenient way to add protein, not a requirement.

Can I take this with medication?

Ask a pharmacist or GP first; some supplements interact with medicines.

Do supplements replace a balanced diet?

No. They are meant to add to a varied diet, not stand in for one.

Sources

Checked 9 October 2026.