Household Ingredients Compared  ›  Protein Drinks (Singapore)

Protein drinks: what's actually in it?

This page covers ready-to-drink (RTD) protein drinks only — bottles and cartons you open and drink, sold in Singapore supermarkets and Singapore-facing online channels. Protein powders are a different product type: they are noted at the end of this page, but their ingredient lists are not merged into these drinks.

The short answer is that “protein drink” covers at least four different kinds of product, and the ingredient list tells you which one you are holding:

• Filtered milk drinks (Rokeby, and the older Magnolia approach): the protein is still milk protein, concentrated from milk itself, with no added protein powder — but flavoured versions still add cane sugar or sweeteners.
• Protein-enriched milks (Magnolia's older list, Barebells, Arla, Oak): milk plus an added milk-protein blend, plus flavourings, stabilisers and either sugar or sweeteners.
• Water-based protein shakes (Quest, Optimum Gold Standard RTD, Labrada Lean Body RTD, Grenade, Premier): water first, protein powders second — milk protein isolate/concentrate, whey or casein — plus oils, gums, flavourings and sweeteners. These are not milk with extra protein stirred in.
• Clear whey and plant-based drinks (protea tea drinks; Oatside pea-protein oat drinks): the protein source is completely different — whey isolate in water and tea, or pea protein isolate in an oat base — so the allergen picture is different too.

This page does not give a health score, a ranking, or a “best” pick. It shows the ingredient list as printed, flags added sugar, sweeteners, protein source and allergens, and explains the jargon in plain English, so you can compare like with like.

The headline, in 30 seconds

• “No added sugar” does not mean “no sweetener.” Barebells, Quest, Optimum, Oatside, Rokeby's no-added-sugar flavours and protea all use sweeteners — sucralose, acesulfame-K, stevia, erythritol, or a combination — instead of sugar. Check the sweetener line, not just the front of the bottle.
• “No added sugar” also does not mean “no sugar on the nutrition panel.” Milk-based drinks still contain lactose (milk sugar), and Rokeby's no-added-sugar flavours still show about 16.6 g total sugars per 425 ml bottle, mostly from the milk base. Added sugar and total sugars are different numbers.
• The biggest sugar split on this page is inside single brands. Rokeby's Dutch Chocolate, Strawberry and Double Espresso add cane sugar; its Choc Honeycomb, Vanilla Wafer and Banana Honey + Cinnamon do not — they use erythritol and stevia instead. Oak has the same split: an original range with sugar and a no-added-sugar range with sweeteners 950 and 955. Do not assume one flavour's list applies to another.
• Two Singapore best-sellers are the weakest panels on this page — deliberately. Meiji Low Fat High Protein Milk (Plain, Chocolate, Green Tea, Banana) is widely sold at FairPrice and 7-Eleven, but no full verbatim Singapore pack list was verified in this pass — or in the 5 November 2026 re-audit — so it is in “seen but not verified,” not panelled. Partial nutrition figures from secondary sources are now recorded against its seen-list entry below, but they are not Singapore pack figures. Magnolia High Protein Milk is panelled, but only on its older Open Food Facts list, which contains sucrose — while F&N announced in August 2026 a reformulation to 30 g protein with “no sugar added.” Those two cannot both describe the current bottle, so the Magnolia panels carry a reformulation warning and must be re-checked on a current pack before any publish step.
• Protein source matters more than the word “protein.” Dairy drinks use milk protein, whey, casein or sodium caseinate; Oatside uses pea protein isolate; protea uses whey protein isolate in water. A pea-protein drink is dairy-free; a whey drink is not, even when it is lactose-free — lactose-free means the milk sugar was broken down, not that the milk protein was removed.
• Most of these drinks are long lists, not short ones. Only Rokeby (7–10 ingredients) and protea (7–9 ingredients) stay short. Water-based shakes routinely run to 20–40 ingredients once the vitamin/mineral blend is counted, and the allergen line is usually milk — plus soy where lecithin is used.

At a glance

Prices are deliberately not shown here: they change weekly and would go stale. This site compares ingredients only.

1. Dairy protein milks — filtered milk and protein-enriched milk

These still taste and pour like milk, because milk is the first ingredient. The difference between them is whether the protein was concentrated out of the milk itself (Rokeby) or added as a protein blend (Magnolia, Barebells, Arla, Oak).

2. Water-based protein shakes — protein powder, already mixed

These start with water, not milk. The protein is a powder blend — milk protein isolate, milk protein concentrate, whey concentrate, calcium caseinate — dissolved into water with oils, cellulose gums, flavourings and sweeteners. If you compare one of these with a Rokeby or Arla bottle, you are comparing two different product types that happen to share the word “protein.”

3. Plant-based RTD protein drinks

Only one plant-based RTD range was verified with full lists in this pass: Oatside Protein. That is a finding, not an oversight to hide — ordinary soy and oat milks are not protein drinks (they typically contain far less protein and are not marketed as protein drinks), so they are not panelled here. If a soy- or almond-based RTD protein drink is found on a Singapore shelf, it belongs in this section.

4. Clear whey protein tea drinks — protea (Singapore)

protea is a Singapore-sold clear whey brand (also at selected 7-Eleven outlets) that dissolves whey protein isolate in water and tea, instead of in milk. The lists are short, there is no milk base, no oil and no gum thickener — but the allergen is still milk, because whey comes from milk. The brand's own description, quoted as the brand's claim, is that the isolate is filtered to remove lactose, fat and milky taste. Caffeine is a real flag here: the tea flavours contain caffeine naturally from tea, at levels the brand compares to a coffee for Jasmine and Osmanthus Oolong.

Nutrition — what the numbers say

Salt = sodium × 2.5: the Sodium column shows sodium as printed, with the salt equivalent in brackets. Where a source prints salt only, sodium is shown with ≈ as salt ÷ 2.5. Sugars figures are total sugars as printed, not added sugars: a drink can show total sugars from milk lactose even where its ingredient list contains no added sugar, and the ingredient list remains the evidence for added sugar. Rows are grouped by basis — per 100 ml first, then per-serving rows, each flagged in the Basis column. Per-serving figures are quoted exactly as printed and are not converted to per 100 ml, so a per-serving row must not be compared directly with a per-100 ml row. No Nutri-Grade is assigned here, and no health score or ranking is given. Where a source prints only some columns, the rest are shown as "not stated", not estimated.

Conflicts / flags: *Rokeby Choc Honeycomb carbohydrate is 6.4 g per 100 ml on the brand site but an Open Food Facts per-serve figure (18.3 g per 425 ml) implies 4.3 g per 100 ml — sugars (3.9 g) and protein agree, carbohydrate does not. Rokeby Dutch Chocolate sodium is 25 mg per 100 ml in retailer listings and 33 mg on the brand site; energy 282 vs 288 kJ. Arla Vanilla salt is 0.18 g per 100 ml at Morrisons/Tesco and 0.12 g in a McGrocer listing. Rokeby Strawberry, Banana Honey + Cinnamon and Vanilla Wafer per-serve figures are from a secondary Singapore review (mmc.sg) cross-checked against the brand's per-bottle sugars totals, not from a full brand nutrition table — verify on the pack. protea sodium was not stated in the brand sources found, so it is shown as not stated, not estimated from the sodium citrate/bicarbonate in the ingredient list.

As observed numbers only, keeping bases separate: among per-100 ml rows, sugars run from 0.3 g (Quest Coffee Milkshake) to 5.9 g (Rokeby Dutch Chocolate and Double Espresso), and sodium from about 24 mg (Rokeby Double Espresso) to about 100 mg (Oatside Protein Chocolate). Among per-serving rows, sugars run from 0 g (all protea rows) to 25.1 g per 425 ml bottle (Rokeby Strawberry), and sodium from 210 mg per 325 ml carton (Optimum Gold Standard Chocolate) to 380 mg per 325 ml shake (Quest Salted Caramel). These are observed panel figures, not a ranking, and per-serving figures are not comparable with per-100 ml figures.

Seen but not verified (nutrition): Magnolia High Protein Chocolate and Vanilla, Oak Plus Protein Vanilla and Chocolate No Added Sugar, Optimum High Protein Shake Chocolate (330 ml), Labrada Lean Body RTD Chocolate (8.5 oz), Grenade Carb Killa Chocolate, Premier Protein Chocolate, Oatside Protein Vanilla — no nutrition panel was verified for these in this pass, so no figures are shown for them. Labrada Lean Body RTD Chocolate (500 ml) has a protein-only row above (40 g per 500 ml bottle); its other columns are not stated. A different flavour needs its own figures.

How to read an ingredient list — the jargon, in plain English

Whey protein / whey protein isolate / whey protein concentrate

Whey is the liquid left over from cheese-making. Concentrate is whey with some lactose and fat still in it; isolate is whey filtered further to remove most lactose and fat, so it is higher in protein per gram and is often marketed as lactose-free. Both are milk proteins — neither is dairy-free.

Milk protein concentrate / milk protein isolate

Protein taken from whole milk, containing both of milk's proteins (casein and whey) roughly in milk's natural ratio, rather than whey alone. Casein digests more slowly than whey — that is the “slow” part of a milk-protein blend, stated here as general background, not as a claim about any one bottle.

Sodium caseinate / calcium caseinate

Casein (milk's main protein) in a salt form that dissolves in water. It is how a water-based shake gets a milky body without using milk itself as the first ingredient. Allergen: milk.

Filtered / cold-filtered milk

Milk passed through a filter that concentrates its protein (and removes some lactose and water) before bottling. Rokeby's claim is that this, not added powder, is where its 30 g protein comes from. Filtered milk is still milk, with lactose still present in small amounts.

Lactase / lactase enzyme

An enzyme that breaks lactose (milk sugar) into glucose and galactose, so the drink is lower in lactose and may taste slightly sweeter. Lactose-free on a label means low lactose, not no milk protein — a lactose-free whey or milk drink can still trigger a milk-protein allergy.

Added sugar vs total sugars vs “no added sugar”

Added sugar means a sugar ingredient was added: sucrose, cane sugar, sugar, invert sugar, brown sugar syrup, or sugar inside a chocolate powder. Total sugars on the nutrition panel includes lactose naturally in milk, so a no-added-sugar milk drink can still show 16–25 g total sugars per bottle. “No added sugar” says nothing about sweeteners — those are listed separately.

Sucralose, acesulfame-K (acesulfame potassium), stevia (steviol glycosides), erythritol

Four different sweeteners that appear constantly on this page. Sucralose and acesulfame-K are intense artificial sweeteners, often used together (coded 955 and 950 in Australia). Stevia/steviol glycosides come from the stevia plant. Erythritol is a sugar alcohol that adds bulk sweetness with very few calories. None of them is sugar, and none of them is counted as added sugar — but a drink sweetened with them is not “unsweetened.” Only protea lite on this page is unsweetened.

Carrageenan, gellan gum, cellulose gum, xanthan gum

Thickeners and stabilisers that keep protein from settling and give a shake its creamy thickness. Carrageenan is coded 407 in Australia. Their presence is a sign the drink was formulated, not just bottled milk — it does not by itself mean the drink is “artificial” in any regulated sense.

Polydextrose, fructooligosaccharide (FOS), inulin, maltodextrin

Soluble fibres and starch-derived ingredients used for body, sweetness balance and fibre content. Maltodextrin is a fast-digesting starch, not a fibre, even though it appears in similar lists. FOS and inulin are fibres that can cause bloating in sensitive people — stated here as general background, not as medical advice about any one product.

Clear whey

Whey isolate filtered until it is clear and juice-like, rather than milky. It is used in water-based drinks (protea, Myprotein Clear Whey) so the drink tastes like tea or juice instead of a milkshake. It is still whey, still milk protein.

Pea protein isolate

Protein extracted from yellow peas. It is the plant-based alternative on this page (Oatside) and is dairy-free, but it is not automatically allergen-free — check the pack for pea/legume allergen statements.

“Protein water” and collagen drinks

Not panelled here. Collagen is an incomplete protein (it lacks tryptophan) and is not counted the same way as whey/milk/pea protein for muscle-protein purposes — that distinction is why collagen-only drinks were left out of this page's scope rather than mixed into the protein-drink panels.

Seen but not verified — do not panel until checked

These were found for sale or listed for Singapore in this pass, but no full verbatim ingredient list was verified for the Singapore pack, so they are listed here with the reason — not panelled, not guessed.

• Meiji Low Fat High Protein Milk — Plain, Chocolate, Green Tea, Banana (350 ml) — the most important gap on this page. Sold at FairPrice, Cheers/FairPrice Xpress, Sheng Siong (Banana reported there) and 7-Eleven; CP-Meiji Singapore confirms 30–32 g protein, USA whey, low fat, no sucrose added, low lactose, and flavours Plain/Chocolate/Green Tea/Banana. But CP-Meiji's Singapore product pages give descriptions, not a full ingredient list, and the only full lists found were Thai Open Food Facts lists (e.g. Banana: milk protein concentrate and whey protein concentrate 10.7%, butterfat 1.1%, skimmed milk powder 0.2%, salt, vitamins, flavourings, stabilisers INS 471/466/407, acidity regulator, sweeteners acesulfame-K and sucralose, colours INS 102/110) — which must not be presented as the Singapore list. Needs a Singapore pack photo. Re-audit 5 November 2026 — partial nutrition figures found (secondary sources only, not Singapore pack figures): Banana per 100 ml — 191 kJ (45 kcal), fat 0.429 g, saturated fat 0.286 g, carbohydrate 2.57 g, sugars 1.14 g, protein 8 g, salt 0.171 g (Thai Open Food Facts); per 350 ml bottle — 160 kcal, 28 g protein. Green Tea per 100 g — about 205 kJ (47 kcal), fat 0.4 g, saturated fat 0.14 g, carbohydrate 2.31 g, sugars 1.4 g, protein 8.6 g, salt 0.179 g (Thai Open Food Facts); per 350 g — 165 kcal, 30.1 g protein. Original — 32.2 g protein per 350 ml bottle, 9.2 g protein per 100 ml, 180 kcal per bottle, fat 1.8 g per 100 ml, added sugar 0 g (secondary Singapore review, mmc.sg); its sugars figure in that table is ambiguous and is not quoted here. Chocolate — 179 kcal, 30 g protein per 350 ml bottle only (secondary, Lemon8). CP-Meiji Singapore confirms 32 g protein Plain, 30 g other flavours, USA whey, BCAAs, Type II Collagen, Nutri-Grade B, no added sugar, low fat, low lactose. None of these replaces a Singapore pack ingredient list or nutrition panel. The older Meiji High Protein (Classic Vanilla 3% sugar, Chocolate 8% sugar, 25 g whey, no sweeteners) described in older Singapore coverage is a different, earlier formulation and is also not panelled.
• Meiji High Protein Activ — Melon, Strawberry (Thai listings) — Thai CP-Meiji pages describe 28–33 g protein, Type II collagen 437 mg, no added sugar, low fat. No Singapore listing confirmed; do not import the Thai list.
• Magnolia High Protein Milk — new 30 g reformulation, Chocolate and Vanilla — announced August 2026, “no sugar added,” developed with the High Performance Sport Institute. The new pack list was not verified, so only the older sucrose-containing list is panelled, with a warning.
• Arla Protein — Raspberry & Strawberry 225 ml — a different, smaller bottle with a different list (milk 88%, milk protein 7%, sugar, raspberry juice concentrate, strawberry, strawberry juice concentrate, flavouring, stabilisers carrageenan/pectin, lactase). Singapore availability of this size was not confirmed; the 482 ml bottle is the panelled one.
• Oak Plus Protein — original with-sugar range, Chocolate and Vanilla — lists starting Milk, Skim Milk, Milk Solids, Sugar… were found for the original range. Which Oak range (original vs No Added Sugar) is actually on Singapore shelves must be confirmed in store.
• Optimum Nutrition High Protein Drink — Strawberry and Vanilla, 330 ml (FairPrice) — FairPrice lists both, but only the Chocolate 330 ml EU list was verified. The 500 ml ASDA lists for Strawberry/Vanilla (with carmine / riboflavin colours) are a different size and are not assumed to match the 330 ml bottles.
• Optimum Nutrition Gold Standard RTD — Vanilla and Strawberry — the Chocolate US RTD list is panelled; Vanilla/Strawberry RTD lists were not separately verified.
• Barebells Protein Milkshake — Cookies & Cream, Cappuccino, Raspberry — listed by Barebells resellers generally, but no FairPrice Singapore ingredient section was found for these flavours in this pass. Cookies & Cream UK list (semi-skimmed milk 66%, milk protein concentrate 31%, water, fat-reduced cocoa, stabilisers, flavourings, cocoa butter, sodium phosphate, acesulfame-K, sucralose, lactase) is recorded in the research notes, not panelled as a Singapore list.
• Labrada Lean Body Protein Shake — FairPrice 500 ml range, remaining flavours: Banana, Cookies n Cream, Mint Chocolate, Vanilla, Salted Caramel, Chocolate Peanut Butter, Strawberry — FairPrice lists these in 12 × 500 ml, but no ingredient section was retrieved for the 500 ml bottles. The 500 ml Chocolate is now panelled (same list as the 8.5 oz RTD, Ultimate Sup Singapore). Mint Chocolate 500 ml has an overseas (Mannings Hong Kong) list that uses inulin instead of fructooligosaccharide — recorded here, not panelled as a Singapore list. A UAE retailer (Ducem) lists a different 500 ml Cookies & Cream formulation (Lean Pro blend, high-oleic safflower oil, Yellow 5, Yellow 6) — also not panelled.
• Grenade Carb Killa — other flavours: Banana Armour, Chocolate Mint, Chocolate Salted Caramel, Cookies and Cream, Fudge Brownie, Strawberries and Cream, White Chocolate — only the generic Chocolate list is panelled; Fudge Brownie's list differs (butter biscuit 0.5% with wheat flour, caramel sugar syrup) and would add a wheat/gluten allergen, so flavours must not be merged.
• Premier Protein — Vanilla, Caramel, Café Latte, Cookies & Cream — only the Chocolate US list is panelled; other flavours' lists were not separately verified for Singapore sale.
• MILO Pro 25 g Protein Drink (500 ml) — listed on Shopee Singapore via the Nestlé Official Store, described as 25 g protein, Nutri-Grade B, no artificial sweeteners. No ingredient list was retrieved in this pass. Regular MILO RTD and MILO powder are not protein drinks in this page's sense and are not panelled.
• Myprotein RTD — Clear Whey Isolate Protein Drink (cans/bottles) and Myprotein × Müller Complete Shakes (Cookies & Cream etc.) — UK RTD products with verified UK lists (Clear Whey: hydrolysed whey protein, flavouring, citric acid, sucralose, acesulfame-K; Müller Complete: milk protein concentrate, whole milk, water, fermented gluten-free oats, sunflower oil, chicory fibre, maltodextrin, flavourings, minerals, vitamins, lactase, carrageenan, gellan gum, sucralose), but no confirmed Singapore supermarket listing in this pass — only powder and pouch products on Shopee Singapore. Needs a Singapore RTD listing before panelling.
• Orgain RTD — Chocolate Fudge, Mocha, Strawberries n Cream — listed as variants by Ultimate Sup Singapore alongside Barebells/Quest/Labrada, but no ingredient list was retrieved in this pass.
• Fairlife Nutrition Plan / Core Power RTD — Singapore sale confirmed online only via Amazon Singapore, Lazada Singapore and Ubuy (secondary Singapore coverage, mmc.sg); no Singapore supermarket listing and no ingredient list was verified in this pass.
• Applied Nutrition High Protein Shake — 500 ml, 42 g protein — sold at FairPrice (secondary Singapore review, mmc.sg); no ingredient list retrieved.
• Quest Strawberry Protein Milkshake — 14 oz ultrafiltered — a different product from the 325 ml Quest range (ultrafiltered nonfat milk, 45 g protein); no Singapore list verified, and it must not be confused with the 325 ml Strawberry flavour.
• Protein powders sold alongside RTD drinks (separate product type, not panelled): Optimum Gold Standard 100% Whey powder, Labrada Lean Body powder, Myprotein Impact Whey, Etblisse Vegan Complete Protein Shake powder (FairPrice: organic skin-peeled soya beans, organic nutritional yeast flakes — a powder, not an RTD, despite the word “shake” in its name). Their lists must never be copied into an RTD panel.
• Medical / paediatric nutritional RTD drinks (out of this page's scope, not counted as protein drinks): Abbott Ensure Gold HMB RTD, Fresubin Diben RTD, PediaSure Gold/TripleSure RTD. These are complete nutritional supplements with long vitamin/mineral lists and maltodextrin/sucrose bases, marketed for medical or child-growth use, not as protein shakes. Their FairPrice ingredient sections were retrieved but they are deliberately excluded from the panels; a future medical-nutrition page could cover them separately.
• Channels not inventoried online in this pass: Giant, Sheng Siong, Don Don Donki, Mustafa, Meidi-Ya, Le Petit Depot and Little Farms returned no usable online RTD protein-drink category or ingredient section in the searches run for this page. That is a gap in the inventory, not evidence that those stores stock nothing — each needs an in-store check. Cold Storage listings confirmed Magnolia High Protein (older 25 g descriptions) and Rokeby availability via secondary coverage; RedMart was confirmed only as a channel for Oatside generally, not as a separate RTD inventory.

What this page is not

• Not a health score, and not medical advice. “High protein,” “low lactose,” “no added sugar” and collagen claims are the brands' claims, quoted as such.
• Not a taste test, and not a price comparison. Prices change weekly; ingredients change less often, but still change — and this category reformulates often (Magnolia 2026 is the proof).
• Not a protein-adequacy guide. It does not say how much protein anyone needs, and it does not count collagen-only drinks as equivalent to whey/milk/pea protein drinks.
• Not complete. Meiji's full Singapore list is the largest missing piece, followed by the Magnolia reformulation list, the FairPrice 500 ml Labrada range, and the in-store ranges at Giant, Sheng Siong, Donki, Mustafa, Meidi-Ya, Le Petit Depot and Little Farms.

Sources and method

Checked 5–6 November 2026 from: NTUC FairPrice product pages and its Ready to Drink Protein Shakes category (Barebells Vanilla/Banana ingredient sections; Labrada, Quest, Optimum, Rokeby listings); Cold Storage listings for Magnolia; Eatbook's March 2026 Singapore protein-shake survey and Straits Times May 2026 coverage for the Singapore inventory (FairPrice 20+ products, 7-Eleven 30+ products, Rokeby and CP-Meiji as the most popular); Open Food Facts Singapore listings for Magnolia, Rokeby, Oak and Oatside, cross-checked against brand/retailer lists where both were available; brand official pages for Oatside, protea Singapore, Quest and Rokeby; retailer lists for Arla (Tesco/McGrocer), Barebells (reseller/brand), Grenade, Premier Protein and Labrada (Ultimate Sup Singapore). Full per-fact source list is in the accompanying research notes. Where a full pack list could not be verified — above all Meiji — the page says so instead of filling the gap, and where sources conflict (Magnolia reformulation, Arla 482 ml, Oak ranges, Quest Chocolate variants, Barebells milk percentages, Oatside cocoa percentages) the page records the conflict on the page. Open Food Facts is a community database: its listings are useful for cross-checking, but the pack and the retailer's ingredient section take precedence if they disagree. Nutrition added 5–6 November 2026: per-100 ml standard where the source gives per-100 figures, per-serving figures flagged and not converted, total sugars as printed (not added sugars), sodium with salt equivalent (salt = sodium × 2.5). Re-audit 5 November 2026: added Quest Coffee Milkshake and Labrada Lean Body 500 ml Chocolate panels (flagged non-SG / import-seller lists), Quest Coffee per-100 ml nutrition and a Labrada 500 ml protein-only row; recorded partial Meiji nutrition figures (secondary sources only) and new seen-but-not-verified entries for Applied Nutrition 500 ml, Fairlife Nutrition Plan / Core Power (SG online sale confirmed) and the Quest 14 oz ultrafiltered Strawberry shake. Meiji's Singapore pack ingredient list remains the page's biggest gap.