Ready-to-Drink Protein Shake: Protein, Calories & Full Nutrition Breakdown

Why Ready-to-Drink Protein Shake shows up in protein-forward diets

Ultra-filtered milk protein blends common to RTD shakes achieve a genuinely impressive 30g protein at only 160 calories — a macro ratio that's hard to replicate mixing powder yourself without buying isolate specifically.

Serving-size math

A 1 bottle (11oz, 325ml) portion delivers 97.5g of protein and roughly 520 calories. Scaled per 100 calories, that works out to 18.75g of protein — useful for comparing against other foods on a calorie-matched basis rather than a weight-matched one.

Prep tip

Check the ingredient list for added sugar alcohols if you're sensitive — several major brands use them to hit a low sugar number.

Best for

• zero-prep convenience
• travel

Allergens

Contains: dairy, milk.

Frequently asked