Soy Protein
Guides and comparisons Plant-based protein powder: how to compare labels
Soy protein powders, such as soy protein isolate, sold unflavoured or flavoured. Soybeans are one of the allergens that EU rules require to be emphasised in the ingredient list. The nutrition table gives the protein per 100 g and per serving, and the label states the serving size in grams and the servings per tub. Compare these figures, and any sweeteners or flavourings, between products.
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Portion prices are calculated from the net contents. Portion sizes differ between products; this is not a dosing recommendation. Read the full ingredients and directions on the product label.
Price per 100 g protein = pack price ÷ protein in the pack (g) × 100.
 NOW Foods
Pea Protein, Dutch Chocolate - 907 grams
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 PEScience
Select Protein Vegan Series, Chocolate Peanut Butter - 918 grams
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 Trained by JP
Vegan Protein, Blueberry Muffin - 2000 grams
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 Stacker2 Europe
100% Plant Based Protein, Chocolate - 454 grams
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 NOW Foods
Pea Protein, Unflavored - 907 grams
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|---|---|---|---|---|---|
| Pack size | 907 g | 918 g | 2,000 g | 454 g | 907 g |
| Main ingredients | Pea protein isolate | Pea and brown rice protein blend | Plant protein blend | Plant protein blend | Pea protein isolate |
| Label portion | 44 g | 34 g | 40 g | 30.3 g | 33 g |
| Protein per 100 g powder | 54.55 g | 58.82 g | 70 g | 75.91 g | 72.73 g |
| Pack price | €59.99 | €45.99 | €47.99 | €15.99 | €42.99 |
| Price per portion | €2.91 | €1.70 | €0.96 | €1.07 | €1.56 |
| Price per 100 g protein | €12.13 | €8.52 | €3.43 | €4.64 | €6.52 |
| Allergen information | See the manufacturer’s full allergen statement. | Contains: PEANUTS. Check the full label. | Contains: SOY. Check the full label. | Contains: SOY. Check the full label. | See the manufacturer’s full allergen statement. |
| Certifications | Informed-Sport GMP Non-GMO | GMP Third-Party Tested | GMP | — | Informed-Sport GMP Non-GMO |
| Label information | Label information | Label information | Label information | Label information | Label information |
Authorised EU Health Claim (HC-136 • Reg. (EU) 432/2012)
“Protein contributes to a growth in muscle mass”
Conditions of use: The claim may be used only for food which is at least a source of protein as referred to in the claim SOURCE OF PROTEIN as listed in the Annex to Regulation (EC) No 1924/2006.
A varied, balanced diet and a healthy lifestyle are important.
Prices include VAT for Ireland. Courier delivery: €6.99; free from €65.00. Estimated delivery: 2–4 working days.
Product facts checked: 2026-10-28.
Frequently asked questions
Why is soy emphasised on a soy protein label?
Soybeans are on the list of 14 allergens that EU rules require to be emphasised in the ingredient list, for example in bold. A soy protein powder therefore shows soy there, and other soy ingredients in a flavoured product are emphasised in the same way.
Is soy protein the same as soy flour?
No. Soy flour is ground soybeans and keeps the other components of the bean, while soy protein isolate or concentrate is processed to a higher share of protein. The name in the ingredient list and the protein per 100 g in the nutrition table show which one a product is.
Is soy protein genetically modified?
Under EU rules a food that contains or is produced from genetically modified soy must say so on the label. Check the ingredient list and the label of the exact product for that statement. The rule applies to the ingredients of a flavoured powder as well as to the protein itself.