Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg

Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg

4.3 (184)

Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg

Overall Rating: 2.3 / 5 (average from multiple review sources, as of 18 Oct 2026)
Based on a total of 48,210 customer reviews from independent review platforms.

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£82.31
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Optimum Nutrition ON Gold Standard 100% Casein Slow Release Protein Powder 1.8kg

Overall Rating: 1.2 / 5 (average from multiple review sources, as of 17 Oct 2026)
Based on a total of 24,155 customer reviews from independent review platforms.

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The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

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Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
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£89.99
GBP 49.99 / kg
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(Chocolate Supreme, 1.82kg) Optimum Nutrition Gold Standard 100% Casein

Overall Rating: 4.4 / 5 (average from multiple review sources, as of 1 Oct 2026)
Based on a total of 137,508 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

All brand names and logos are the property of their respective owners.

Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
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£258.99
Free Delivery
Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg

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SLOW-DIGESTING PROTEIN powder FORTIFIED with zinc which contributes to a healthy immune system and magnesium to support normal protein synthesis The ready-to-mix powder provides a source of slow digesting protein to support muscle growth and repair* Each serving contains 24 g of premium micellar casein protein that provides your body with a slow and steady FLOW OF AMINO ACIDS OVERNIGHT This protein powder contains 10 g of naturally occurring essential amino acids with low sugar in each serving A PROTEIN source for athletes & fitness enthusiasts; to enjoy, add 1 heaped scoop to 300 ml of cold water and stir, shake or blend until dissolved *Protein contributes to the growth and maintenance of muscle mass. To be used in the framework of a varied and balanced diet and healthy lifestyle. Source: Official Journal of the European Union - COMMISSION REGULATION (EU) No 432/2012
£82.31
In stock
amazon.co.uk

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Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg - Details

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We have found 3 prices for Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg. Our price list is completely transparent with the cheapest listed first. Additional delivery costs may apply.

Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg - Price Information

  • Cheapest price: £82.31
  • The cheapest price is offered by amazon.co.uk. You can order the product there.
  • The price range for Optimum Nutrition Gold Standard 100% Casein Slow Digesting Protein Powder with Zinc and Magnesium, Keto, Support Muscle Growth & Repair Overnight, Chocolate Supreme, 55 Servings, 1.82 kg is £82.31 to £258.99, with a total of 3 offers.
  • Payment methods: The online shop amazon.co.uk supports: Direct debit, Mastercard, Visa
  • Delivery: The shortest delivery time is In stock working days offered by amazon.co.uk.

1 Variants from £84.56

User reviews

Our reviews come from Trustami, a service that automatically collects, links, and verifies reviews from various sources such as Google, eBay, Amazon, and Trusted Shops. This gives users a transparent overview of a manufacturer's customer satisfaction.

4.3 out of 5 stars

184 Ratings
5 stars
134
4 stars
19
3 stars
7
2 stars
6
1 star
18
Amazon.es Kunde

Good protein, highly recommended – I would definitely buy it again.

via trustami

Amazon.de Kunde

Absolute game‑changer if you fast overnight. Enjoy it an hour before bed and you wake up in the morning completely free of muscle soreness. Truly a day-and-night difference in recovery time. The product also tastes better and is creamier/shakier than the whey counterpart. Highly recommended.

via trustami

Amazon.fr Kunde

I recommend

via trustami

Amazon.es Kunde

I love the flavour. It thickens quite a bit in almond milk. It dissolves poorly, but with a blender or milk frother it turns out perfect.

via trustami

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