Mass gainers are high-calorie protein supplements for hardgainers who struggle to consume enough calories from food alone. But many mass gainers are loaded with cheap sugars and maltodextrin. We rank the top 5 cleanest mass gainers for 2024.
Why We Reviewed Roundup
The best mass gainers use complex carbs, quality protein sources, and real food ingredients — not just sugar and cheap whey. We evaluated calorie density, macronutrient quality, and digestibility.
✅ Pros
- Convenient high-calorie supplement
- Useful for hardgainers
- Some quality options use whole oats
❌ Cons
- Many contain excessive sugar
- Very calorie-dense — easy to overconsume
- Expensive per pound
Key Ingredients
- #1 Transparent Labs Mass Gainer (oat-based)
- #2 Optimum Nutrition Serious Mass
- #3 BSN True Mass
- #4 Dymatize Super Mass Gainer
- #5 Naked Mass
Who Is This For?
Ectomorphs, hardgainers, and athletes needing 3000+ calories daily who struggle with solid food volume.
Check Current Price on Roundup
Find the best mass gainer for your needs through our ranked links.
View Best Price →Price & Value
Range: $40–$80 for 10–25 servings depending on brand.
Our Verdict
Transparent Labs Mass Gainer tops our list for using whole oats and quality protein. Avoid options loaded with maltodextrin and added sugars. We give it a N/A/5 and recommend it for ectomorphs, hardgainers, and athletes needing 3000+ calories daily who struggle with solid food volume.