Plant-Based Protein Powder, Explained

Plant-based protein powder works best in a smoothie when you read the label first, then blend. This guide gives you five quick label checks, a clear amount to scoop and a straight answer on heavy metals.

What Is Plant-Based Protein Powder?

Plant-based protein powder is a concentrated protein made from plants such as peas, hemp, brown rice or soy. Many brands isolate the protein, which removes most of the carbs and fat. Some powders use one source, while others blend several.

Whey and casein come from dairy, so they are not plant-based. However, a plant-based powder is not always vegan, so check the label if that matters to you.

Plant-Based Protein Powder Label Checklist

Start here. These five checks take about a minute, and they work on any tub or pouch.

1. Protein per scoop. Check the grams per serving and the scoop size. Many plant-based powders list roughly 15 to 25 grams.
2. Added sugar. Flavored powders often include sweeteners. Compare the sugar line to the flavor you plan to buy.
3. Ingredient list. Shorter lists are easier to judge. Also take a second look at gums and long flavor blends.
4. Third-party testing. Look for a seal such as NSF Certified for Sport or USP Verified. Then ask the brand for its heavy metal test results.
5. Protein source and texture. Pea powders tend to blend smoothly, hemp tastes nutty and earthy, and brown rice can feel gritty. A blend often mixes best.

If you would rather skip the label hunt, my Homemade Protein Powder uses just hemp protein, chia and flaxseed. Otherwise, I suggest Ritual Protein or Complement Essential when I want to buy a powder. For recipes that use it, browse my high-protein smoothies.

Plant Protein Sources for Smoothies

Each source behaves a little differently in a blender. Here is how they compare in a smoothie.

• Pea: usually mixes smoothly and tastes mild, so it works in fruit and green smoothies.
• Hemp: nutty and earthy, with a slightly thicker texture. It pairs well with banana, cacao and berries.
• Brown rice: mild in flavor but can feel gritty on its own. For that reason, it often shows up in blends.
• Soy: a complete protein with a neutral taste. Skip it if you avoid soy.
• Blends: combine several sources, so they cover more amino acids and usually mix with a smoother texture.

How Much Plant-Based Protein Powder to Add

Start with one label-size scoop per smoothie. My homemade protein powder serving is 30 grams, about 1/4 cup. Next, adjust the liquid, because powder thickens a smoothie as it sits.

If your smoothie turns thick, add a splash more plant-based milk and blend again. For the full formula, see my smoothie basics.

Heavy Metals in Plant-Based Protein Powder

Testing has found lead and other heavy metals in many protein powders, and plant-based powders often scored worse. The Clean Label Project tested 134 products, and Consumer Reports reported on the results. Plants absorb metals from soil, which helps explain the pattern.

In that testing, organic powders averaged higher levels than non-organic ones. However, some brands disagree with the methods. That is why I treat the results as a reason to ask questions, not a final verdict.

So ask for proof. A good brand will share a certificate of analysis from a third-party lab. If a brand will not share one, pick another powder.

Plant-Based Protein Powder vs. Homemade Protein Powder

Homemade or store-bought comes down to what you want from each scoop. My homemade protein powder blends hemp protein, chia and flaxseed in about five minutes. Here is what my recipe card lists per 30-gram serving, which is about 1/4 cup.

• Protein: 16 grams
• Fiber: 5 grams
• Sugar: 0.1 gram, with no added sweeteners
• Calories: 140

Now compare that to a tub. Some store-bought powders list 20 grams of protein or more per scoop. That happens because isolated powders strip out most of the carbs and fat.

• Choose homemade if you want three ingredients, fiber in every scoop and no flavorings. It costs about $1 to $1.44 per serving, depending on where you buy the seeds.
• Choose store-bought if you want more protein per scoop or a vanilla or chocolate flavor. Then run it through the label checklist above.

Either way, seeds are plants too, so the testing advice still applies. For my homemade blend, I buy single-ingredient hemp protein powder. Then I check whether the brand shares its test results.