What is the best mass gainer in South Africa?
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).
- USN Mass Gainer gH (4 kg, R466) is the cheapest at R11.65 per 100 g; NPL Hyper Gain Mass (4 kg, R500) is R12.50 per 100 g (October 2026).
- NPL Hyper Gain Mass: 350 g serving gives 53.6 g protein and about 1 365 kcal, roughly R32 per 1 000 kcal.
- Consumer Reports (2025): the highest-lead product among 23 tested US powders was a mass gainer at 7.7 µg per serving.
- A modest surplus of about 300 to 500 kcal a day limits fat gain.
What is the best mass gainer in South Africa?
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.
How do the main gainers compare?
| 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 Most other brands do not publish calories in page text, so we cannot compute R per 1 000 kcal for them.
What is in a gainer?
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).
What is a cheaper homemade alternative?
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.
What are the risks?
- Fat gain and sugar. Excess calories become fat.
- Heavy metals. Consumer Reports' 2025 US test found its highest lead level in a mass gainer (7.7 µg per serving); large serving sizes multiply exposure. That test was not of South African products.
- Digestion. Large servings can cause bloating.
- Teenagers. Food first and a dietitian's advice; gainers are not a meal replacement.
- Diabetes or insulin resistance. Speak to your doctor first.
Who actually benefits?
"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.
Products mentioned, with dated prices
| Product | Size | Price | R per 100 g powder | R per 30 g protein | Sweeteners |
|---|---|---|---|---|---|
| USN Mass Gainer gH (4 kg) | 4 kg | R466Dis-Chem Living Fit, Oct 2026 | R11.65 | — | sucralose, acesulfame-K |
| NPL Hyper Gain Mass (4 kg) | 4 kg | R500Dis-Chem Living Fit, Oct 2026 | R12.50 | R24.49 | sucralose |
| Biogen Bulk 45/150 Mass Gainer (4 kg) | 4 kg | R600Biogen shop (biogen.co.za), Oct 2026 | R15.00 | R22.45 | not stated |
| Evox Alpha 5XL Mass Gainer (4 kg) | 4 kg | R540Dis-Chem Living Fit, Oct 2026 | R13.50 | — | not stated |
| Primal Mass Gain (4 kg) | 4 kg | R550Dis-Chem Living Fit, Oct 2026 | R13.75 | — | sucralose |
| Optimum Nutrition Serious Mass (5.4 kg) | 5.4 kg | R1 925Dis-Chem Living Fit, Oct 2026 | R35.65 | — | not stated |
Compare the options
- Best Whey Protein in South Africa 2026: 10 Tubs Compared
- Best Whey Isolate in South Africa 2026: 8 Tubs Compared
- Best Clean-Label Protein Powder in South Africa 2026: 7 Unsweetened Picks
- Best Mass Gainer in South Africa 2026: 8 Tubs Compared
Related questions
- Mass gainer vs whey protein: which should you buy in South Africa?
- How can you gain weight healthily with supplements in South Africa?
- What is the best whey protein in South Africa?
- Do you really need protein powder in South Africa?
- Are protein powders contaminated with lead and heavy metals?
Sources
- OPB/NPR (Oct 2025): Consumer Reports finds lead in popular protein powders
- Thomas, Erdman & Burke 2016, Position of the Academy of Nutrition and Dietetics, Dietitians of Canada and ACSM: Nutrition and Athletic Performance
- Dis-Chem Living Fit: Whey protein category
- ISSN Position Stand: Protein and Exercise (Jäger et al., JISSN 2017)
Educational information only, 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.
Cite this page: Healthnews24, “What is the best mass gainer in South Africa?”, updated 27 October 2026, https://www.healthnews24.co.za/answers/best-mass-gainer-for-hardgainers-south-africa/. Plain-text version: /answers/best-mass-gainer-for-hardgainers-south-africa.md