SIRENLABS
Siren Labs Ultra Karbs Mass Gainer Post Workout Muscle Builder Healthy Carb Loading - Carbohydrate Blend with KarboLyn - More Energy, Faster Recovery - Weight Gainer for Men (40 Servings)
★★★★⯨
4.7(59 ratings)$50.00
See price historyWith the Siren Labs Ultra Karbs Mass Gainer Post Workout Muscle Builder, SIRENLABS aims to offer quality nutrition that fits your lifestyle.
Designed for those who struggle to pack on size, this mass gainer means business.
SIRENLABS' high-calorie mass gainer formulated for athletes looking to increase size and strength.
Formulated to help sustain energy levels throughout your day or workout.
Uses animal-derived protein sources for a complete amino acid profile.
Strikes a good balance between quality ingredients and reasonable pricing.
Available at $50.00 — a competitive price point for the US market.
Worth considering if you're comparing options in the mass gainer category.
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.
Energy & Performance
Designed to fuel intense workouts and sustain energy levels throughout your training session.
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 | $50.00 | $39.98 | $33.00 | $43.95 |
| Per Serving | - | - | - | - |
| Servings | — | — | — | — |
| Lab Tested | ✗ | ✓ | ✓ | ✓ |
| Rating | 4.7 ★ | 4.5 ★ | 4.4 ★ | 4.6 ★ |
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.
Dymatize
Dymatize Super Mass Gainer Protein Powder, Gourmet Vanilla, 52g Protein, 1g Creatine, 1280 Calories, 10.7g BCAAs, 245g Carbs, Contains Whey Protein Powder, Isolate, and Casein (8 Servings)
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)
Animal
Animal M-Stak - Muscle Builder and Anabolic Mass Gainer Supplement for Bodybuilding - Lean Muscle Growth, Amino Complex and Pre Workout Energy, 21 Packs
Muscle Milk
Muscle Milk Gainer Protein Powder, Chocolate, 32g Protein, 5 Pound
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