Grass Fed Whey Isolate Protein - Vanilla (30 Serving Tub)
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
Certifications & Testing
Other Ingredients
Natural flavor, Sunflower Oil, Maltodextrin, Sodium Caseinate, Monoglycerides, Diglycerides, Tocopherols, Medium Chain Triglyceride, Maltodextrin, Acacia Gum, Silicon Dioxide, Sunflower Lecithin, Sunflower Lecithin, Protease, Amylase, Lipase, Cellulase, Lactase, Bromelain, Papain, Stevia Leaf Extract, Monk Fruit Extract, Lactobacillus acidophilus
Recommended Use
Suggested Use: Mix one scoop with at least 8 ounces of water or your choice of beverage.
Warnings
Consult a medical doctor before taking this or any other nutritional supplement if you are pregnant, nursing, have or suspect a medical condition, or are taking any medications. Do not use if freshness seal is missing or broken. Keep out of reach of children. Notice: Use this product as a food supplement only. Do not use for weight reduction. Contains: Milk
Frequently Asked Questions
What is Onnit Grass Fed Whey Isolate Protein - Vanilla (30 Serving Tub)'s Formulate score?
Onnit Grass Fed Whey Isolate Protein - Vanilla (30 Serving Tub) scores 89 out of 100 (grade A) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Onnit Grass Fed Whey Isolate Protein - Vanilla (30 Serving Tub) worth it?
Onnit Grass Fed Whey Isolate Protein - Vanilla (30 Serving Tub) scores 89/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Onnit Grass Fed Whey Isolate Protein - Vanilla (30 Serving Tub)?
Each serving contains Calcium (30 mg), Potassium (20 mg), Whey Protein Isolate (21.1 g). Serving size: 26 Gram(s). 30 servings per container.
How do I take grass fed whey isolate protein - vanilla (30 serving tub)?
Suggested Use: Mix one scoop with at least 8 ounces of water or your choice of beverage.
Who makes Grass Fed Whey Isolate Protein - Vanilla (30 Serving Tub)?
Grass Fed Whey Isolate Protein - Vanilla (30 Serving Tub) is made by Onnit. See Formulate's full grade and product lineup for Onnit on its brand page.
Is Onnit Grass Fed Whey Isolate Protein - Vanilla (30 Serving Tub) third-party tested?
Onnit lists the following certifications and testing for this product: Gluten-Free, Third-Party Tested.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.