# Serious Mass - Optimum Nutrition

**Category:** Sport & fitness
**Code (GTIN/SKU):** 5060469985213
**Canonical URL:** https://openreviews.io/en/reviews/p/serious-mass-optimum-nutrition-5060469985213

## Rating: 4.7/5 ★★★★★ — 467 reviews analyzed
_Confidence: high_

## At a glance

Serious Mass - Optimum Nutrition reviews: 4.7/5 based on 467 analyzed reviews from 4 sites, updated October 26, 2026.

Praised: effective mass gain and manufacturing quality.

467 reviews analyzed, all published on other sites.
Other sites: 4 sources, 467 reviews, average rating 4.7/5.
How we count reviews: https://openreviews.io/en/methodology

## AI summary

This weight gain dietary supplement is particularly appreciated for its effectiveness in supporting muscle development and helping to reach daily caloric goals. Users highlight the high overall quality of its formulation. The taste of this product is also considered very pleasant and easy to consume daily, with no major reservations or recurring flaws reported by consumers.

## Strengths

- **Effective mass gain** — The product actively and effectively supports muscle development and caloric intake goals.
- **Manufacturing quality** — The general formulation and quality of ingredients are praised as being excellent.
- **Pleasant taste** — The flavors offered are considered very successful and pleasant to consume regularly.

## Frequently asked questions

- What is the dominant taste of this formula?
- Is this product easy to mix without lumps?
- Does it quickly help increase caloric intake?
- Is it suitable for people with a sensitive stomach?

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_Source: OpenReviews — https://openreviews.io/en/reviews/p/serious-mass-optimum-nutrition-5060469985213_