Optimum Nutrition Serious Mass is the category's default for a reason: it's the cheapest way to add real calories, at roughly six cents per 100, from a brand people trust, with 50 g of protein, 25 vitamins and minerals and about 3 g of creatine in the tub. If your single goal is maximum calories for minimum money, nothing on this list beats it on value per calorie. But it's also the clearest picture of the category's compromise — the carbohydrate is maltodextrin and there's roughly 31 g of added sugar in every serving, exactly the sugar-bomb profile this page's framing warns about. Buy it if value per calorie is your top priority and you'll manage the sugar elsewhere in your diet, but know the three picks above it are cleaner fuel for the same job.
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Read the complete Muscle Growth guide →The weakest axis and the reason it isn't higher. The carbohydrate is maltodextrin — a cheap, high-glycemic refined starch — plus roughly 31 g of added sugar per serving. That's the sugar-bomb profile the ranking penalizes on its heaviest axis, no matter how big the calorie number it produces. It clears a passing score only because 31 g, while high, is not the worst on the list.
A genuine strength. 1,250 label-stated calories and 50 g of protein in one serving is a real bulk dose, with the protein squarely in the ideal 40-55 g window. This is the axis Serious Mass was built to win — enough calories in a single shake to create a surplus for almost anyone.
Mixed. On the plus side: 25 vitamins and minerals and ~3 g of creatine (an effective dose per Kreider 2017), from a multi-source whey-casein-egg-albumen protein blend. On the minus side: the carb base is maltodextrin, the sweetening leans on added sugar, and there's documented formula drift on the vitamin and creatine counts across versions. A solid mainstream formula, not a clean one.
The benchmark on this axis — roughly $0.38 per 100 kcal, among the cheapest calories on the entire list. This is the honest tension in the ranking: the maltodextrin tubs are genuinely the cheapest way to buy calories, and we credit that even while docking them on carb quality. If value per calorie is your metric, this is close to the top.
Reliable. Two heaping scoops mix without excessive clumping for a 1,250-calorie shake, and the Chocolate flavor is one people actually finish — a real compliance advantage over the blander bulk tubs. The added sugar is part of why it tastes good, which is the double-edged nature of this pick.
“1,250 calories and 50 g of protein per serving.”
The label states 1,250 kcal and 50 g protein per two-scoop serving, and these figures are from the powder itself (mixed with water), not inflated with milk. Both are verifiable and accurate, and 50 g sits in the ideal protein window.
“25 vitamins and minerals plus creatine per serving.”
The 25-micronutrient panel is label-stated and verifiable. The creatine content (~3 g) and some vitamin counts show documented drift across formula versions, so treat the ~3 g creatine as approximate-by-version rather than a fixed guaranteed figure — check the specific tub's panel.
“The cheapest / best-value serious calories.”
At roughly $0.38 per 100 kcal, Serious Mass is among the cheapest calories on this list, consistent with its value positioning and best-seller status. The value-per-calorie claim holds up on the honest cost-per-100-kcal metric this ranking uses.
“Supports serious mass and muscle gains.”
It supplies a large surplus and 50 g of protein, but no gainer builds muscle without a sustained surplus plus resistance training (Slater 2019, PMID 31482093; Morton 2018, PMID 28698222). Roughly 31 g of that serving is added sugar, which past the protein-and-surplus need adds fat, not muscle — so 'serious mass' is accurate only inside the training-and-surplus context.
“A clean or premium bulk formula.”
The carbohydrate is maltodextrin with ~31 g of added sugar per serving — the sugar-bomb profile this category's framing warns about. Any implication of a clean or premium formula would be misleading; Serious Mass is an honest value product, and its value comes precisely from cheap maltodextrin calories, not clean ones.
At roughly $0.38 per 100 kcal, nothing here delivers calories cheaper from a brand this trusted. If your only goal is to add a large surplus for minimum money, Serious Mass is the value benchmark and has been for years. The 12 lb tub, 25-vitamin panel and built-in creatine round out a lot of product for the price.
This is exactly the profile the page's framing warns about: maltodextrin carbs plus about 31 g of added sugar in every serving. That's a genuine sugar load — for context it's more than six times the sugar of Naked Mass at the identical 1,250 calories. The value is real, but so is the sugar, and it's why three cleaner picks outrank it.
Serious Mass includes ~3 g of creatine (an effective dose per Kreider 2017) and 25 vitamins and minerals, which is genuinely useful. Be aware there's documented formula drift on the exact vitamin and creatine numbers across versions, so check the panel on the specific tub you buy rather than assuming a fixed figure.
A gainer you dread is a gainer you quit, and Serious Mass wins on compliance: the Chocolate flavor is well-liked and it mixes without turning to paste. Part of why it's palatable is the added sugar, which is the double edge of this pick — the thing that makes it easy to drink is also the thing that drops its carb-quality score.
Serious Mass earns its best-value badge honestly: at roughly six cents per 100 calories, it's the cheapest way on this list to add a real surplus, from a brand you can trust, with 50 g of protein, 25 vitamins and minerals and about 3 g of creatine in the tub. If maximum calories for minimum money is your single priority, nothing here beats it, and its reliable mixing and finish-able flavor mean you'll actually drink it. But it's also the clearest example of the category's compromise. The carbohydrate is maltodextrin and there's roughly 31 g of added sugar in every serving — the sugar-bomb profile this page's framing exists to warn about, and more than six times the sugar of Naked Mass at the same 1,250 calories. That's why three cleaner formulas outrank it. Buy Serious Mass if value per calorie is genuinely your top priority and you'll manage the sugar elsewhere in your diet. If you'd rather pay more for whole-food or low-sugar carbs, move up the list.
Check Optimum Nutrition · Serious Mass · powder · 12 lb / 16 servings on AmazonSerious Mass's closest rival — slightly more calories (1,280) and a better whey-isolate-and-casein protein blend, often even cheaper per calorie, but only 1 g creatine and the same maltodextrin base.
See it on the list →The same 1,250 kcal and 50 g protein with only 5 g of sugar from three ingredients. Costs more per calorie, but it's the low-sugar way to hit the identical bulk target.
See it on the list →The best-overall pick — whole-food carbs, 53 g whey, 3 g creatine and no added sugar. The clean upgrade if you'll pay a real premium per calorie.
See it on the list →A modest surplus supports hypertrophy; a large one mainly adds fat. Serious Mass supplies cheap surplus calories efficiently, but the ~31 g of added sugar past your protein and surplus needs contributes to fat gain, not muscle.
Protein supplementation aids gains up to ~1.6 g/kg/day. The 50 g dose is useful, but calories beyond the protein target — including this tub's added sugar — don't add muscle past the ceiling.
The ISSN identifies 3-5 g/day of creatine as the effective dose. Serious Mass's ~3 g (where the version delivers it) lands at the low end of that range — a genuinely useful inclusion, though the exact amount drifts by formula version.
