Casein proteins ranked

Top 10 Casein Proteins

For evening shakes, slower-digesting protein and fuller textures. We compare 10 casein protein options for UK shoppers, focusing on serving details, texture, protein profile and the kind of routine each one suits.

Updated 27 April 2026Reviewed by Jamie, EditorContains affiliate links

Ranked on routine fit, label clarity and overall value — never by paid placement.

Explore the ranking Compare our top 3

Ranked list

The top 10 at a glance

Use the cards below to compare the products, then open the top-three table if you want the quickest side-by-side view.

Top pick Second pick Third pick Compare our top 3

Nutrition data standard: Exact protein, calorie, caffeine and supplement amounts are shown only where this audit found a current source match. Anything still marked “Check label” was deliberately withheld rather than guessed. Last source check: 2026-04-29; always confirm the live product label before buying.

Optimum Nutrition

Gold Standard 100% Casein

Start hereEvening shake

A classic micellar casein tub for people who want a slow-digesting shake before bed or between meals.

FormatPowder
Protein / serving24 g
Calories / servingCheck label

Source checked: Verified figures were matched to a current brand page, retailer nutrition table or pack claim on 2026-04-29. Any remaining “Check label” field was deliberately withheld rather than guessed.

Editor’s take: ON is the obvious benchmark here: familiar brand, clear casein positioning and an easy product to compare against cheaper options.

Watch-out: Texture can be thicker than whey, so check reviews if you dislike creamy shakes.

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PBN

Micellar Casein Powder

Good valueEvening shake

A budget-friendly micellar casein powder for shoppers who want the casein format without paying for a premium tub.

FormatPowder
Protein / servingCheck label
Calories / servingCheck label

Label check: Exact amounts can vary by flavour, serving size, formula and pack; confirm the current label before buying.

Editor’s take: This is a sensible comparison if you care about cost per serving and are not fussed about flashy extras.

Watch-out: Check flavour options and serving size, as basic casein powders can vary a lot on taste.

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PBN

Micellar Casein Pouch

Also compareEvening shake

A pouch version of the PBN micellar casein style, useful if storage and price matter more than a branded tub.

FormatPowder
Protein / servingCheck label
Calories / servingCheck label

Label check: Exact amounts can vary by flavour, serving size, formula and pack; confirm the current label before buying.

Editor’s take: The pouch format can be practical and less bulky, especially if you already use casein regularly.

Watch-out: Make sure the listing matches the flavour and pack size you expect.

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Applied Nutrition

100% Casein Protein

Evening shake

A straightforward casein option from a familiar sports-nutrition brand.

FormatPowder
Protein / serving25.2 g
Pack detail30 g serving

Editor’s take: Applied Nutrition suits shoppers who want a normal shake routine with a clear slow-release protein angle.

Watch-out: Compare calories and sweeteners if you are using it as a nightly habit.

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Bulk

Micellar Casein

Evening shake

Bulk's micellar casein is a clean, no-drama option for people who want slow-release protein in a simple powder.

FormatPowder
Protein / serving23 g
Calories / servingCheck label

Editor’s take: It is easy to compare against ON and PBN because the product is focused on the core casein job.

Watch-out: Casein texture is naturally thicker, so use more liquid if you prefer a lighter shake.

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Bulk

Bedtime Protein Shake

Evening shake

A bedtime-positioned protein shake for shoppers who want the use case made obvious.

FormatPowder
Protein / serving30 g
FlavourChocolate Flavour

Editor’s take: This is less about chasing the highest number and more about having a shake that fits an evening routine.

Watch-out: Check whether the blend suits you if you specifically want pure micellar casein.

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Pink Sun

Organic Native Casein

Evening shake

A niche organic native casein option for shoppers who care about sourcing and a less mainstream product style.

FormatPowder
SourceGrass-fed
CertificationOrganic

Label check: Exact amounts can vary by flavour, serving size, formula and pack; confirm the current label before buying.

Editor’s take: It will appeal most to people who want a cleaner-feeling casein choice rather than the cheapest tub.

Watch-out: Expect to pay more for the positioning; compare serving cost before buying.

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Sanatogen

High Protein Powder

Evening shake

A more general high-protein powder that is less gym-focused than most products in this list.

FormatPowder
Key activeClassic Supplement
Pack detailCheck label

Label check: Exact amounts can vary by flavour, serving size, formula and pack; confirm the current label before buying.

Editor’s take: It may suit shoppers who want a straightforward protein boost rather than a specialist bodybuilding casein.

Watch-out: Check the ingredient list carefully if you specifically need micellar casein.

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BioTechUSA

Micellar Casein

Evening shake

A flavoured micellar casein option for people who want a conventional slow-release shake with a clear low-sugar angle.

FormatPowder
Sugar noteLow sugar
Servings / packCheck label

Label check: Exact amounts can vary by flavour, serving size, formula and pack; confirm the current label before buying.

Editor’s take: BioTechUSA is worth comparing if taste and dessert-style flavours matter to you.

Watch-out: Check sweetness and thickness reviews; casein can feel heavy if mixed too thick.

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Protein – Iced Coffee

Evening shake

A coffee-flavoured protein option with a different feel from standard bedtime casein tubs.

FormatPowder
Protein / servingCheck label
Sugar / servingCheck label

Label check: Exact amounts can vary by flavour, serving size, formula and pack; confirm the current label before buying.

Editor’s take: This is more of a lifestyle shake pick, useful if the iced-coffee angle makes you more likely to use it.

Watch-out: Compare the protein blend before buying if your aim is pure casein rather than a mixed protein drink.

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Top-three comparison

Compare our top 3

A quick side-by-side view of the first three products in the ranking. Always check the live product page before buying.

Comparison point	🥇 Optimum Nutrition Gold Standard 100% Casein	🥈 PBN Micellar Casein Powder	🥉 PBN Micellar Casein Pouch
Protein / serving	24 g	Check label	Check label
Calories / serving	Check label	Check label	Check label
Protein source	Micellar Casein	Micellar Casein	Micellar Casein
Sugar level	Check label	Check label	Check label
Servings / pack	Check label	Check label	Check label
Why compare it	Lean Goals	All‑Rounder	Budget Pick
Amazon	View on Amazon	View on Amazon	View on Amazon

Label check: Comparison figures can vary by flavour, serving size, formula and pack. Use this table as a shortlist, then confirm the current product label or live listing before buying.

FAQs

Common questions

Plain-English answers to the checks that usually matter before buying.

What is casein protein?

Casein is a slow‑digesting dairy protein powder often used in the evening.

Does it build muscle like whey?

Casein provides protein over a longer period. Choosing between casein and whey depends on your personal preferences and timing.

Is it thicker than whey?

Yes. It often mixes to a thicker, pudding‑like texture if not blended thoroughly.

Can I use it during the day?

Yes. Many people use casein between meals or in recipes like protein puddings.

Next step

Comparing recovery protein?

Casein is one option. The recovery hub helps you compare slow-release protein with whey, clear protein and joint-support choices.

Open recovery hub Compare whey protein