Health, fitness and the supplement aisle. An independent South African desk.
Protein · Answer
The cheapest mass gainers in South Africa are USN Mass Gainer gH (4 kg, R466, R11.65 per 100 g) and NPL Hyper Gain Mass (4 kg, R500), but the best one depends on protein and calories per serving: NPL gives 53.6 g protein and about 1 365 kcal for about R44 a serving. A homemade milk, oats and peanut-butter shake often does the same job for less (October 2026).
A mass gainer is a high-calorie powder, mostly carbohydrate with some protein, that helps you reach a calorie surplus. It works only because it adds calories; food can do the same job. Prices are October 2026.
| Product | Size and price | Serving | Protein per serving | Cost per serving |
|---|---|---|---|---|
| USN Mass Gainer gH | 4 kg, R466 | 300 g | image-only label | about R35 |
| NPL Hyper Gain Mass | 4 kg, R500 | 350 g | 53.6 g (about 1 365 kcal, 255 g carbs) | about R44 |
| Evox Alpha 5XL | 4 kg, R540 | not clearly stated | not clear | not computable |
| Primal Mass Gain | 4 kg, R550 | 334 g | label missing on page | about R46 |
| Weider Mega Mass Gainer | 4 kg, R555 | not captured | not captured | not computable |
| Biogen Bulk 45/150 | 4 kg, R600 | 226 g | 45.3 g (150 g carbs) | about R34 |
| PVM Fusion Mass | 2.4 kg, R960 | 75 g | 33 g (12.1 g sugar) | about R30 |
| Optimum Nutrition Serious Mass | 5.4 kg, R1 925 | 2 rounded scoops | 50 g (about 1 250 kcal) | not computable |
Cost per 100 g: USN R11.65, NPL R12.50, Evox R13.50, Primal R13.75, Weider R13.87, Biogen R15.00, PVM R40.00, Optimum Nutrition R35.65.
NPL's serving (350 g) costs about R44 and delivers around 1 365 kcal, roughly R32 per 1 000 kcal. Most other brands do not publish calories in page text, so we cannot compute R per 1 000 kcal for them.
Mostly maltodextrin and other carbohydrates, plus whey or blends, some fat and sweeteners (sucralose and acesulfame-K in USN's gainer). Biogen Bulk 45/150 is stated stimulant-free and Informed Choice on the brand page (register not checked).
Blend 500 ml full-cream milk or maas, 60 to 80 g oats, a banana, 2 tablespoons of peanut butter and, if you like, one scoop of whey. That is roughly 800 to 1 000 kcal (our estimate; check labels) and adds real food. A modest surplus of 300 to 500 kcal a day limits fat gain, so a full gainer serving is often more than you need.
"Hard gainers", people with high energy needs or a poor appetite, ideally with a dietitian's guidance. Total calories and training matter more than the product. See mass gainer vs whey, how to gain weight healthily and the best mass gainer comparison.
| Product | Size | Price (source, date) | Servings | R per 100 g powder | R per 30 g protein | Sweeteners |
|---|---|---|---|---|---|---|
| USN Mass Gainer gH (4 kg) | 4 kg | R466 (Dis-Chem Living Fit, 2026-10) | — | R11.65 | — | sucralose, acesulfame-K |
| NPL Hyper Gain Mass (4 kg) | 4 kg | R500 (Dis-Chem Living Fit, 2026-10) | — | R12.50 | R24.49 | sucralose |
| Biogen Bulk 45/150 Mass Gainer (4 kg) | 4 kg | R600 (Biogen shop (biogen.co.za), 2026-10) | — | R15.00 | R22.45 | not stated |
| Evox Alpha 5XL Mass Gainer (4 kg) | 4 kg | R540 (Dis-Chem Living Fit, 2026-10) | — | R13.50 | — | not stated |
| Primal Mass Gain (4 kg) | 4 kg | R550 (Dis-Chem Living Fit, 2026-10) | — | R13.75 | — | sucralose |
| Optimum Nutrition Serious Mass (5.4 kg) | 5.4 kg | R1 925 (Dis-Chem Living Fit, 2026-10) | — | R35.65 | — | not stated |
Educational information, not medical advice. Speak to a doctor, pharmacist or registered dietitian before using supplements if you are pregnant or breastfeeding, under 18, taking medication, or living with kidney, liver or heart disease. Prices were observed in October 2026 and are not offers.