Crazy Nutrition Mass Gainer is the lean gainer of the group. At about 488 calories a serving it's built for adding a controlled surplus rather than dumping 1,200 calories at once, and its carbs lead with gluten-free oat flour for a cleaner base and only around 8 g of sugar. A DigeZyme enzyme blend and MCTs help it sit easier than the heavy bulk tubs. The honest reasons it ranks low: it's the priciest tub per calorie on the entire list, it's sweetened with artificial sucralose, and there's no creatine. If you specifically want a lighter, easier-digesting gainer for a slow lean bulk and don't mind paying for it, it has a real niche — but as pure calories it's poor value.
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Read the complete Muscle Growth guide →Better than the maltodextrin bombs but not top-tier. The carbs lead with gluten-free oat flour — a genuine whole-food-leaning base — with only ~8 g of sugar and ~6 g of fiber, which is clean. But maltodextrin is still in the blend behind the oats, so it's a partial whole-food profile rather than the fully whole-food carbs of the top two picks.
Deliberately moderate. At ~488 calories and 40 g of protein it's a lean-gainer dose — enough for a controlled surplus but well short of the 1,200-calorie bombs, and the 40 g protein sits at the lower edge of the ideal window. Fine for a slow lean bulk; underpowered if you need a large single-shake surplus.
The lowest ingredient-quality score on the list, on a genuinely mixed profile. Pluses: DigeZyme digestive enzymes, MCT oil, added B6/B12, zinc and magnesium, and a whey-plus-milk-protein-concentrate blend. Minuses: it's sweetened with artificial sucralose, it's dairy-based (not vegan), and there's no creatine. The sucralose and missing creatine are what hold it down.
The worst raw value on the list — at roughly $0.92 per 100 kcal it's the most expensive tub per calorie of the eight, on a premium sticker price. It scores as high as it does only because value is judged against what you get (a lean, gut-friendly formula), but as pure calories it's poor value and we don't hide that.
Decent. A moderate ~125 g serving mixes more easily than the seven-scoop bombs, and the sucralose sweetening makes the Chocolate flavor palatable. It's not a standout on taste, but the smaller serving and DigeZyme enzymes make it one of the easier gainers here to actually get down.
“A lean gainer for controlled, quality calories.”
At ~488 kcal with oat-flour-led carbs and only ~8 g of sugar, the label supports the 'lean gainer' framing — a moderate, controlled surplus rather than a 1,200-calorie bomb. The positioning is accurate and matches the nutrition panel.
“Oat-flour-led carbs with low sugar.”
Gluten-free oat flour does lead the carb blend and sugar is low at ~8 g, both verifiable and genuinely cleaner than the maltodextrin tubs. But maltodextrin remains in the blend behind the oats, so it's a partial whole-food carb source, not a fully whole-food one like the top picks.
“DigeZyme enzymes make it easier to digest.”
DigeZyme is a real, branded multi-enzyme complex and its inclusion is verifiable; enzymes can plausibly aid comfort with a heavy shake. But digestion-comfort benefits are individual and not a proven muscle or absorption advantage, so the claim is reasonable but not strongly evidenced — treat it as a comfort feature, not a performance one.
“A clean, premium gainer.”
It's cleaner than the maltodextrin bombs on sugar and carb source, but it's sweetened with artificial sucralose and contains no creatine, so 'clean/premium' is only partly earned. The premium price is real; the 'clean' label is fair on sugar but undercut by the artificial sweetener.
“Supports muscle growth.”
The 40 g of protein supports muscle protein synthesis (Moore 2009, PMID 19056590), but growth requires a sustained surplus plus resistance training (Slater 2019, PMID 31482093). At ~488 kcal it supplies only a modest surplus, so the muscle-growth claim is conditional on training and eating enough overall.
At ~488 calories, this is built for a controlled lean bulk rather than a 1,200-calorie dump. If you want to add a modest, manageable surplus — say for a slow, lower-fat gaining phase — the moderate serving and oat-led carbs fit that goal better than a bulk tub. It's a genuinely different tool from the rest of the high-calorie list.
The carbs lead with gluten-free oat flour and sugar is only ~8 g, which is genuinely cleaner than the maltodextrin bombs. But it's sweetened with artificial sucralose, which undercuts the 'clean' positioning for anyone avoiding artificial sweeteners. It's cleaner on sugar, not cleaner on additives.
This is the honest headline against it: at roughly $0.92 per 100 kcal on a $90 tub, it's the most expensive calories of the eight — more than double ON or Naked Mass. A gainer's core job is supplying calories, and this one supplies them least efficiently. If value as pure calories matters at all, this is the wrong pick.
The DigeZyme enzyme complex, MCT oil, and added B6/B12, zinc and magnesium are genuine comfort-and-micronutrient extras that help a heavy shake sit easier. But there's no creatine, so if you want it you'll add 3-5 g of monohydrate separately (Kreider 2017), on top of an already-premium tub.
Crazy Nutrition Mass Gainer is the lean gainer of the group, and for the right buyer that's a real niche. At ~488 calories it's built for a controlled surplus rather than a 1,200-calorie dump, its carbs lead with gluten-free oat flour for a cleaner base with only ~8 g of sugar, and the DigeZyme enzymes and MCTs make it sit easier than the heavy tubs. For a slow, lower-fat lean bulk, that's a sensible profile. But it ranks near the bottom on honest grounds. It's the most expensive tub per calorie on the entire list — more than double ON or Naked Mass — it's sweetened with artificial sucralose, and there's no creatine. A gainer's core job is supplying calories, and this one does that least efficiently. Buy it only if you specifically want a lighter, gut-friendly gainer for a controlled bulk and are willing to pay the premium. If you want value, or a full bulk dose, or clean whole-food carbs without sucralose, better picks sit above it.
Check Crazy Nutrition · Mass Gainer · powder · 2.5 kg / ~20 servings on AmazonThe cleanest whole-food option — real oats, sweet potato and rice, 2-3 g sugar, no maltodextrin and no sucralose — that you scale by adding scoops. A cleaner lean-bulk tool at better value per calorie.
See it on the list →The best-overall pick — 770 kcal of whole-food carbs, 53 g whey and 3 g creatine, no added sugar and no artificial sweeteners. The clean upgrade with creatine built in.
See it on the list →If you actually want a big bulk shake instead of a lean gainer — 1,250 kcal and 50 g protein with only 5 g sugar from three ingredients, at far better value per calorie.
See it on the list →A modest, individualized surplus supports hypertrophy while a large one adds fat. This tub's ~488 kcal is a deliberately small surplus — well-suited to a controlled lean bulk, which is exactly its stated purpose.
Protein supplementation aids gains up to ~1.6 g/kg/day. The 40 g dose is a solid per-serving contribution toward that daily target, adequate for a lean bulk even at moderate calories.
Muscle protein synthesis was near-maximally stimulated around 20 g of high-quality protein per serving. At 40 g per scoop this tub clears the per-serving threshold that drives muscle protein synthesis with room to spare.
