
666 in Protein Powder
Optimum Nutrition - Protein 80 Plus
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Based on 1 year's data from Mar 20, 2026 How it works
r/Costco • What’s your favorite protein powder from Costco and why? →
Levels without a doubt. And it’s often on sale for $15 off. I’d say Levels >>> ON > Kirkland >>>> Ascent.
r/Costco • What’s your favorite protein powder from Costco and why? →
ON was best in that regard but I tried Kirkland and Levels AFTER I started GLP-1s and general gastrointestinal discomfort is a common side effect so it clouds everything a bit. I haven’t had any ON while on GLP-1s.
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