# What is the best casein protein in South Africa?

Source: https://www.healthnews24.co.za/answers/best-casein-protein-south-africa/
Publisher: Healthnews24 (South Africa's supplement answer desk)
Updated: 2026-10-27

> Casein is a thin category in South Africa. The cheapest verified tubs in October 2026 are Primal Casein 750 g and Nutritech Casein Slow Release 1 kg, both about R500; NPL 750 g (R590–R630) is the only one with a published protein figure, 22 g per 30 g, about R34 per 30 g of protein. Optimum Nutrition Gold Standard Casein 900 g is R1 200.

Key facts:
- The cheapest casein tubs verified in October 2026 are Primal 750 g and Nutritech 1 kg, both about R500.
- NPL Casein 750 g (R629.99, 22 g protein per 30 g) works out at about R34 per 30 g protein.
- ISSN: 30–40 g of casein before sleep supports overnight muscle protein synthesis without impairing fat burning.
- Optimum Nutrition Gold Standard Casein 900 g is R1 200, about R133 per 100 g of powder.

## What is the best casein protein in South Africa?

There is no clear winner, because most listings do not publish protein per serving. Dis-Chem lists only seven casein products, so we list verified ones and say what is missing. Casein is the slow-digesting milk protein; its main use is a pre-sleep dose of 30–40 g (ISSN).

| Product | Size | Price (October 2026) | Protein / serving | Sweetener |
|---|---|---|---|---|
| Nutritech Casein Slow Release | 1 kg | R499.90 (Mopani Pharmacy) | not published in sources we could read | not stated |
| Primal Casein Protein | 750 g | R499.99 (Dis-Chem Living Fit) | 35 g serving; protein is an image | sucralose |
| My Wellness Clean Casein (chocolate) | 840 g | R585 (Faithful to Nature) | price only | not stated |
| NPL Casein Slow Release | 750 g | R589.99–R629.99 | 22 g per 30 g | sucralose |
| Biogen Night Feed Casein | 800 g | R719.99 | 32 g serving; protein is an image | not stated |
| Optimum Nutrition Gold Standard 100% Casein | 900 g | R1 199.99 | 24 g per rounded scoop | not stated |

Evox Night Time Casein appears on the brand site, but we found no retailer price.

## How do you compare them?

Only NPL gives enough data to compute cost per protein: at R629.99 for 750 g and 22 g per 30 g serving, it works out at about R34 per 30 g of protein, close to NPL's own Platinum Whey (about R33). Primal and Nutritech cost less per 100 g of powder (R67 and R50), but without a protein figure we cannot say they cost less per gram of protein. ON is about R133 per 100 g of powder, the dearest option.

## Is casein worth buying?

Evidence is moderate. A 40 g dose before sleep improved overnight protein balance after evening training (Res et al., 2012), and the ISSN notes it does not blunt fat burning. For muscle over weeks, total daily protein matters more than type, so a second whey scoop is a cheaper alternative. Food sources such as milk, yoghurt and cottage cheese also supply casein. See [casein vs whey](/answers/casein-vs-whey-protein-south-africa/).

## Who should skip it?

Milk allergy, lactose-sensitive users (casein contains some lactose), and anyone cutting calories: 30–40 g adds roughly 120–160 kcal. See a doctor or dietitian if you have kidney disease.

## How should you choose?

Take it 30–60 minutes before bed on training days, mix with water or milk, and check the label for protein per serving and sweeteners. Our [best whey protein](/best/best-whey-protein-south-africa/) page covers the main protein picks, and [when to take whey](/answers/when-to-take-whey-protein/) covers timing.

## Products mentioned

| Product | Size | Price (source, date) | Servings | R per 100 g powder | R per 30 g protein | Sweeteners |
|---|---|---|---|---|---|---|
| Nutritech Casein Slow Release (1 kg) | 1 kg | R499.90-R499.99 (Mopani Pharmacy (via PriceCheck), 2026-10) | — | R49.99 | — | not stated |
| Primal Casein Protein (750 g) | 750 g | R500 (Dis-Chem Living Fit, 2026-10) | — | R66.67 | — | sucralose |
| My Wellness Clean Casein Protein Chocolate (840 g) | 840 g | R585 (Faithful to Nature (via PriceCheck), 2026-10) | — | R69.64 | — | not stated |
| NPL Casein Slow Release Night Time Protein (750 g) | 750 g | R589.99-R629.99 (Dis-Chem Living Fit, 2026-10) | — | R84.00 | R34.36 | sucralose |
| Biogen Night Feed Casein Protein (800 g) | 800 g | R720 (Biogen shop (biogen.co.za), 2026-10) | — | R90.00 | — | not stated |
| Optimum Nutrition Gold Standard 100% Casein (900 g) | 900 g | R1 200 (Dis-Chem Living Fit, 2026-10) | — | R133.33 | — | not stated |

## Sources

- [Dis-Chem Living Fit: casein category (October 2026)](https://dischemlivingfit.co.za/product-category/protein/casein/)
- [NPL: Casein Protein product page](https://www.npl.za.com/products/casein-protein)
- [PriceCheck: Nutritech Casein Slow Release 1 kg](https://www.pricecheck.co.za/offers/88849585/Nutritech+Casein+Slow+Release+1kg+Chocolate+Mousse)
- [ISSN Position Stand: Protein and Exercise (Jäger et al., JISSN 2017)](https://pubmed.ncbi.nlm.nih.gov/28642676/)
- [Res et al. 2012, Protein ingestion before sleep improves postexercise overnight recovery (Maastricht University record)](https://cris.maastrichtuniversity.nl/en/publications/protein-ingestion-before-sleep-improves-postexercise-overnight-re/)