
VO2-Boost brings the Natural Endurance and Oxygen Supplement to Help VO2 max to your fitness arsenal — here's what sets it apart.
If gaining weight has always been a challenge, this mass gainer could be your ally.
VO2-Boost's high-calorie mass gainer formulated for athletes looking to increase size and strength.
Well-suited for muscle-building goals when paired with consistent training.
Uses animal-derived protein sources for a complete amino acid profile.
Strikes a good balance between quality ingredients and reasonable pricing.
Available at $49.99 — a competitive price point for the US market.
A well-rounded offering from VO2-Boost that checks the right boxes for most users.
The brand behind this product — their story and what they stand for.
US-based supplement brand offering mass gainer and weight gain products.
Understand which fitness goals this product is best suited for.
Muscle Gain
Supports muscle growth and recovery when combined with resistance training and a protein-rich diet.
Track how the price has changed over the last 90 days on Amazon.com.
Step-by-step usage instructions so you get the most out of every serving.
Mix 1–2 scoops with 300–400ml of milk for a calorie-dense shake.
Consume between meals or post-workout to hit your caloric surplus.
Start with 1 scoop to assess tolerance before moving to the full serving.
Track your total daily calories. A mass gainer works best when it fills a genuine calorie gap — not as a meal replacement.
See how this product compares to similar options in its category.
| This Product | Dymatize | Rule 1 Proteins | Animal | |
|---|---|---|---|---|
| Price | $51.95 | $39.98 | $33.00 | $43.95 |
| Per Serving | - | - | - | - |
| Servings | — | — |
Common questions about this product — answered clearly and honestly.
This product is Non-Veg. It may contain animal-derived ingredients — check the label for specifics.
As of our last check, this product does not have publicly listed third-party lab testing. Look for brands that offer Trustified, NABL, or Labdoor certifications for verified purity.
In-depth guides and articles to help you make a more informed choice.
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| Lab Tested | ✗ | ✓ | ✓ | ✓ |
| Rating | 4.3 ★ | 4.5 ★ | 4.4 ★ | 4.6 ★ |

Rule 1 Proteins
Rule 1 Proteins Mass Gainer - High-Calorie Weight Gain Formula with 1,220+ Calories, 250g+ Complex Carb Blend, 40g All-Whey Protein Per Serving (8 Servings, Vanilla Crème)