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What are the best protein powders to use in a smoothie?

Quick answer

The best protein powder for a smoothie is one that mixes smoothly, tastes good with fruit and fits your diet. Whey blends easily and suits most people who eat dairy. Pea, soy or rice-pea blends work for vegan diets. We do not rank brands: check the label for protein per scoop, added sugar and allergens.

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In this article
  1. Which type of protein powder is best for smoothies?
  2. What is the best protein powder for fruit smoothies?
  3. What should I check on the label?
  4. How do I add protein powder without clumps?
  5. How much should I add?

Which type of protein powder is best for smoothies?

Type In a smoothie Watch out for
Whey concentrate Usually mixes easily, mild creamy taste Contains milk and some lactose
Whey isolate Usually thin and mixes easily Contains milk; usually less lactose
Casein Tends to thicken a lot Contains milk; can get too thick
Pea or pea-rice blend Often earthy and slightly grainy; works with banana, cocoa, peanut butter Texture varies by brand
Soy Fairly neutral Soy allergen
Hemp Nutty, can be gritty Protein per scoop varies, often lower

What is the best protein powder for fruit smoothies?

Unflavored or vanilla works with most fruit. Chocolate pairs with banana and peanut butter. Berry-flavored powders can taste artificial with real fruit, so start with vanilla or unflavored.

What should I check on the label?

  • Protein per scoop: varies by brand, so compare grams per serving.
  • Added sugar and sweeteners: some powders add several grams of sugar.
  • Allergens: milk, soy, eggs or tree nuts.
  • Third-party testing: protein powders are sold as dietary supplements, and the FDA is not authorized to approve supplements for safety and effectiveness before they are marketed. A seal from an independent testing organization can give extra assurance about what is in the tub, though it is voluntary.

How do I add protein powder without clumps?

Pour liquid into the blender first, add powder, then fruit and ice, and blend until smooth. Frozen banana or yogurt makes the texture creamier. Powder generally thickens a smoothie, so add extra liquid if it is too thick.

How much should I add?

Follow the serving size on the label, usually one scoop. Adding more does not necessarily help. If you have kidney disease, are pregnant, or take medication, or you are considering protein supplements for weight loss, ask a doctor or dietitian first.

People also ask

Is whey or plant protein better for smoothies?

Whey usually blends more smoothly. Plant protein is the choice for vegan diets or milk allergy, and works best with strong flavors like banana, cocoa or peanut butter.

Does protein powder thicken smoothies?

Yes, especially casein and some plant proteins. Add more liquid or less powder if the smoothie gets too thick.

Can you add protein powder to smoothies?

Yes. Add liquid to the blender first, then powder, then fruit and ice, and blend until smooth.

General information only, not medical advice. If you have a health condition or are pregnant, ask your doctor before changing what you drink.

Sources

  1. U.S. FDA: Information for Consumers on Using Dietary Supplements, read 5 Nov 2026
Written by Drinks Type Editorial Team · Published Mar 12, 2025 · Updated Nov 5, 2026
About · How we verify this · Editorial policy · Corrections

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