Optimum Nutrition Gold Standard Casein Protein Powder, Cookies & Cream 4 LB

Amazon-style retail reviews and Walmart customer reviews for this Optimum Nutrition casein flavor are broadly positive, with repeated praise for taste, mixability, and the slow-digesting bedtime use case. Walmart reviewers mention that it “tastes great,” is “better for digestion than whey,” and call it “one of the best flavors,” while Holland & Barrett shoppers describe it as “very good,” “tasty,” and effective for overnight protein needs.

On Reddit, users discussing ON Gold Standard Cookies & Cream say they enjoy it and find it delicious, though some broader casein discussions note that taste preferences vary by brand and flavor. A blog review of the same product also calls it “delicious” and says it helps them get through the night easily.

The main negative theme is digestion for a minority of users, with one review site noting bloating/difficulty digesting the product. Overall, the product appears well-liked for flavor and convenience, with occasional complaints about gastrointestinal comfort and flavor intensity.

• Amazon-style retail feedback: mostly positive on taste and mixability.
• Walmart reviewers: good flavor, easy digestion for many, strong overall ratings.
• Holland & Barrett reviews: “very good,” “tasty,” and useful for overnight protein.
• Reddit and blogs: generally favorable, but a few users mention digestive issues.