At a glance
Serious Mass - Optimum Nutrition reviews: 4.8/5 based on 259 analyzed reviews from 2 sites, updated October 26, 2026.
Praised: overall effectiveness.
Review summary
Written by Augur from the 259 reviews analyzed
This gainer is a mass-building formula highly appreciated by users for its effectiveness. Customer feedback highlights excellent results in supporting muscle development and daily calorie intake.
What buyers talk about most
- Strength : Overall effectivenessThis product receives excellent feedback regarding its effectiveness for weight gain.
About the product
Brand, category, barcode, review sourcesShow Hide
- Category
- Sport & fitness
- Barcode (EAN)
- 5060245601061
- Reviews analyzed
- 259
- Last updated
- October 26, 2026
- Version for AI
- Markdown version of this page, for AI assistants
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