2020
September
Is R1 Casein by Rule 1 the best protein supplement?
No, R1 Casein by Rule 1 is not the best protein supplement. Out of 466 protein supplements in the database, R1 Casein ranks number 16. This ranking puts it in the top third of all protein supplements.
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This section displays comparisons between R1 Casein and its sister products; other protein supplements manufactured by Rule 1. Manufacturers often make multiple products within the same category.
This section displays comparisons between R1 Casein and similarly ranked protein supplements. Read more: How does the database rate supplement products?
This section displays comparisons between R1 Casein and other protein supplements.
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