1 / 7Optimum Nutrition Gold Standard Casein Protein Powder, Strawberry, 28 Servings
Servings: Optimum Nutrition Gold Standard Casein is a strawberry-flavoured, slow-digesting casein powder for buyers seeking a protein shake as part of their daily intake. The listing claims 24 g of micellar casein protein per serving and includes zinc and magnesium.
At a glance
- The listing describes a slow-digesting micellar casein powder and claims 24 g protein per serving.
- Zinc and magnesium are stated additions. The listing associates zinc with immune function and magnesium with normal protein synthesis.
- Each serving is listed as containing 10 g of essential amino acids.
- The seller lists 28 servings in a 0.92 kg pouch.
Reference price: £45.00
Price checked: 12 Nov 2026
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Pros and cons
Pros
- The 24 g protein claim per serving and 28-serving count make the stated serving basis clear.
- A strawberry flavour and suggested cold-water mixing method are specified.
- Zinc and magnesium are included in the listed formula.
Technical specifications
15 specifications| Brand | Optimum Nutrition |
|---|---|
| Model | Optimum Nutrition Gold Standard Casein Protein Powder |
| Protein source | Casein |
| Flavour | Strawberry |
| Servings per container | 28 |
| Diet type | Gluten Free |
| Package type | Pouch |
| Number of items | 1 |
| Country of origin | United Kingdom |
| Protein per serving | 24 g |
|---|---|
| Essential amino acids per serving | 10 g |
| Suggested mixing quantity | add 1 heaped scoop to 300 ml of cold water and stir, shake or blend until dissolved |
| Dimensions listed | 15.6 x 15.6 x 24.7 centimetres |
|---|---|
| Weight listed | 0.92 Kilograms |
| May contain | Contains: Egg may contain, Gluten may contain, Peanuts may contain, Soy may contain, Tree nuts may contain |
|---|
What to know before buying
- The listing says the powder contains milk and may contain egg, gluten, peanuts, soy and tree nuts. Its safety text says not to use it as a substitute for a varied diet, not to exceed the recommended daily portion, and to keep it out of reach of small children.
Listing details to confirm
Serving directions differ across listing sections: one says a heaped scoop with 300 ml water, another says 33 g with 300 ml, and the description also gives 300–360 ml. Confirm the pouch directions. The title lists 0.92 kg while another field gives a 924 g unit count, and a separate net-volume entry says 908 Litres. Treat those quantity details as inconsistent rather than settled. The listing also describes a pouch while manufacturer packaging notes discuss tubs, and its ingredient list includes cocoa powder despite the strawberry flavour. Check the selected pack and its label before buying.
Who is it for?
A good fit for
- People looking to add a casein protein powder to their routine, particularly those interested in the listing's slow-digesting protein positioning.
- Buyers who prefer strawberry flavour and want a stated 28-serving pack.
Less suited to
- People avoiding milk or concerned about the listed possible traces of egg, gluten, peanuts, soy or tree nuts.
- Buyers who need a clearly consistent pack size, serving measure or flavour ingredient list without checking the pouch label.
Customer reviews on Amazon
- 5 stars
65% 65% - 4 stars
17% 17% - 3 stars
7% 7% - 2 stars
4% 4% - 1 star
7% 7%
Customer feedback reports some positive perceptions of effectiveness, including use for overnight muscle recovery, while taste, mixability, texture and value receive mixed reactions. That feedback matters if you plan to drink it regularly: the listing specifies strawberry flavour and cold-water mixing, but neither guarantees that its sweetness or texture will suit you.
Positive themes
- Some customer feedback describes the powder as effective, including for overnight muscle recovery.
Mixed feedback
- Taste is mixed, with feedback ranging from enjoyable to sickly sweet.
- Mixability and texture receive mixed reactions, including reports of difficulty mixing and an unpleasant drinking texture.
- Value for money is divided, with some finding it worthwhile and others dissatisfied.
Frequently asked questions
How much protein is listed per serving?
The listing claims 24 g of micellar casein protein per serving.
How many servings are in the pack?
The listing states 28 servings. Quantity information is inconsistent across fields, so check the selected pack and label.
How is the powder mixed?
One direction says to add a heaped scoop to 300 ml of cold water. Other listing text gives a 33 g measure and, elsewhere, 300–360 ml of water. Follow the directions on the pack.
Does it contain possible allergens?
The listing says it contains milk and may contain egg, gluten, peanuts, soy and tree nuts. Check the package label if you have an allergy.
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