If you only do one bit of maths before buying protein, make it cost-per-serving, not tub price. A big tub looks cheaper than a small one and tells you almost nothing, because what you actually pay for is grams of protein per scoop and how many scoops are in the jar. Sort by that, plus whether the powder is third-party tested and whether it'll wreck your gut, and the shelf reorders itself fast.
This is a buyer's guide by job-to-be-done, not a scored review. We only put a number on supplements we've tested against a repeatable method, so these are editorial picks pointing you to a category, not a rating out of ten. Every SGD price is indicative and moves constantly on pack size, flavour and promo, so treat each one as "check current price" before you tap pay.
Some links here are affiliate links — if you buy through them we may earn a commission, at no extra cost to you. The picks below are chosen on the numbers, not the commission, and an affiliate relationship never changes a ranking.
Quick picks
| Pick | Best for | Standout | Indicative price (SGD) |
|---|---|---|---|
| Optimum Nutrition Gold Standard 100% Whey | Best overall whey | The default benchmark, stocked everywhere | ~S$58 (0.9 kg)–S$143 (2.3 kg) |
| Dymatize ISO100 | Best isolate / post-workout | Hydrolysed, 99%+ lactose removed | ~S$220 (2.3 kg), ~S$4.00/serve |
| Myprotein Impact Whey Protein | Best budget brand-name | Sold direct, deep promo cycles | ~S$60–90/kg on promo |
| Nutricost Whey Concentrate | Lowest cost-per-serving | ~S$1.18 a serve | ~S$78 (2.27kg) |
| EHP Labs Blessed Plant Protein | Best plant-based (taste) | Best-rated vegan flavour in SG | ~S$80/tub |
| Thorne Whey Protein Isolate | Best for tested athletes | NSF Certified for Sport | ~S$72 (906g), ~S$2.86/serve |
A 30-second primer on the three words you'll see: concentrate is roughly 80% protein and 4–5% lactose; isolate is filtered up to about 90% protein with as little as ~1% lactose, which is why isolates are treated as effectively lactose-free; plant (pea, rice and blends) is dairy-free by definition. Informed Choice / Informed Protein test for banned substances and label accuracy; NSF Certified for Sport is the strictest, screening against 200-plus banned substances for athletes who get drug-tested.
1. Optimum Nutrition Gold Standard 100% Whey
Best for: the person who just wants a safe default that's stocked in every shop.
ON Gold Standard is the most widely sold, most consistently reviewed whey in Singapore, and that ubiquity is the point — you'll find it at LAC, GNC, iHerb and Ultimate Sup, on promo somewhere most months. You get 24g of protein per ~30g serving from an isolate-led blend, and the 2.3 kg tub's ~73 servings work out to roughly S$1.90–2.00 a serve.
The catch: it's a blend, meaning it contains concentrate alongside isolate, so it's not the lowest-lactose option here. If dairy sits badly with you, skip to the isolates below. It's also a brand premium — you can beat it on pure cost-per-serving.
Where to get it: LAC, GNC, iHerb SG, Ultimate Sup. Indicative ~S$58 (0.9 kg) to ~S$143 (2.29 kg); check current price.
2. Dymatize ISO100 Hydrolyzed
Best for: the fastest-absorbing post-workout shake and the most lactose-stripped tub on the shelf.
ISO100 is a hydrolysed isolate — cross-flow micro-filtered then partly pre-digested — delivering 25g of protein, 5.5g of BCAAs, and under 1g each of sugar and fat per serving. The micro-filtration removes over 99% of the lactose, which makes it a sensible pick for most people with mild-to-moderate lactose intolerance who still want dairy whey.
The catch: purity costs. At around S$4.00 a serving it's roughly four times the cheapest concentrate here, and most general gym-goers won't notice the difference between hydrolysed and regular isolate. Pay for it if digestion or fast absorption genuinely matters to you, not because the label says "hydrolyzed."
Where to get it: GNC, Ultimate Sup, Amazon.sg. Indicative ~S$220 (2.3 kg); check current price.
3. Myprotein Impact Whey Isolate
Best for: a third-party-tested isolate that doesn't cost ISO100 money.
This is the value-isolate counterweight to Dymatize. At about 90% protein you get roughly 23–25g per serving (it varies by flavour), it's vegetarian and gluten-free, and crucially it's tested under both Informed Choice (banned substances) and Informed Protein (label accuracy). Because Myprotein sells direct, the real price often lands well below RRP during their frequent sitewide sales.
The catch: flavour and mixability are merely fine, not the experience you get from a Ghost. And you have to time the promos — at full RRP the value advantage shrinks.
Where to get it: Myprotein SG direct, plus LAC, Shopee and Decathlon. Indicative ~S$126 for 1kg (about 40 servings); check current price.
4. Myprotein Impact Whey Protein (concentrate)
Best for: the best budget all-rounder from a name you recognise.
The concentrate version of the above is repeatedly named Singapore's budget whey of choice, for one reason: Myprotein sells direct, so the cost-per-serving drops sharply on their near-constant sales. You get 22g of protein per 30g serving at around 80% protein, with the same Informed Choice / Informed Protein testing as the isolate line — rare at this price.
The catch: it's a concentrate, so the lactose load is higher than any isolate. Fine for most people; not for sensitive guts.
Where to get it: Myprotein SG direct, Shopee. Indicative ~S$60–90 per 1kg on promo, up to ~S$137 for 900g at full RRP; check current price.
5. Nutricost Whey Protein Concentrate
Best for: the lowest cost-per-serving, full stop.
If the only number you care about is dollars-per-gram-of-protein, this is the winner. In an April 2026 comparison of 15 products available in Singapore, Nutricost concentrate came in at roughly S$1.18 a serving for 25g of protein — the cheapest in the set, where the most expensive pick (ISO100) ran S$4.00. It's a no-frills value brand bought through iHerb SG.
The catch: it's a concentrate, so not for the lactose-sensitive, and the brand cachet and flavour range are thin. You're buying protein, not an experience.
Where to get it: iHerb SG. Indicative ~S$78 for 2.27kg; check current price.
6. Nutricost Grass-Fed Whey Protein Isolate
Best for: the cheapest true isolate in Singapore.
When you want the low-lactose benefit of an isolate without isolate pricing, this unflavoured grass-fed option lands around S$1.56 a serving for a generous 30g of protein — among the cheapest real isolates you can buy here. Being an isolate, it's naturally low in lactose.
The catch: unflavoured means unflavoured. You'll want to blend it into something or accept a fairly plain shake, and the flavoured range is limited.
Where to get it: iHerb SG. Indicative ~S$100–111 for ~0.9–2.27 kg; check current price.
7. Ghost Whey Protein
Best for: the one that actually tastes like the thing on the label.
Ghost built its reputation on licensed flavours — Chips Ahoy!, Cinnabon and the like — and a fully disclosed label with no proprietary blends, so you can see exactly what's in the 25g-per-serving isolate-led whey. If you've quit protein in the past because it tasted like chalk, this is the pick that fixes that.
The catch: you pay a flavour premium, collab flavours can push past ~S$110, and popular ones sell out regularly. Buy only from the authorised SG retailer to avoid grey-market tubs.
Where to get it: Ultimate Sup (authorised), Elite Supps, Amazon.sg, Shopee. Indicative ~S$80 (0.9 kg) and up; check current price.
8. EHP Labs Blessed Plant Protein
Best for: plant-based that doesn't taste like a punishment.
Vegan protein has a deserved reputation for grittiness, and Blessed is the pea-protein isolate most consistently rated the best-tasting in Singapore roundups. You get 23g of protein per serving, and because it's dairy-free it's fully lactose-free — the cleanest route if whey upsets your stomach.
The catch: it's not stocked by the local supplement chains, so you import it direct, and at ~S$80 a tub it isn't the cheapest plant option. You're paying for the taste.
Where to get it: ehplabs.sg (direct import). Indicative ~S$80 per tub (30 servings); check current price.
9. NOW Foods Pea Protein
Best for: budget plant-based.
If you want dairy-free protein at the lowest cost, single-source NOW Foods pea protein delivers 24g per serving at around S$1.74 a serving — the cheapest plant option in the Singapore comparison. Lactose-free, no animal products, no fuss.
The catch: it leans unflavoured, and a single-source pea protein has a less complete amino profile than a multi-source blend (see the next pick). Functional and cheap, not a flavour event.
Where to get it: iHerb SG. Indicative ~S$47 for 907g; check current price.
10. Orgain Organic Plant-Based Protein
Best for: plant-based for a sensitive gut.
Orgain blends pea, brown rice, chia and more for a fuller amino profile than any single-source plant powder, and it's organic and dairy-free, which makes it a common gentle-on-the-gut choice for people who react to both whey and concentrates. You get 21g of protein per serving.
The catch: at ~S$2.91 a serving it's pricier than NOW pea, and 21g per serve is at the lower end — fine, but you may scoop a touch more.
Where to get it: iHerb SG. Indicative ~S$58 for 920g; check current price.
A note for drug-tested athletes
If you compete in a tested sport, none of the above is automatically safe enough — contamination, not the marketing, is the risk. The strongest certification among the SG-available picks is Thorne Whey Protein Isolate, which is NSF Certified for Sport and screened against 200-plus banned substances, at roughly S$2.86 a serving for 21g of protein (iHerb SG). The Informed-tested Myprotein line (picks 3 and 4) is the next tier down and far cheaper. For everyone else, a third-party seal is a nice-to-have proxy for "this brand lets an outside lab check its label," not a hard requirement.
For cutting specifically, Isopure Zero Carb (25g protein, zero carb, lactose-stripped isolate, ~S$3.31/serve via iHerb SG) is a digestion-friendly low-carb option, though it costs more per serve than the value isolates above.
The cheapest-per-serve options are almost always unflavoured value-brand concentrates; the big-name tubs charge a brand and flavour premium for the same grams.The Catalyst Feed
How to choose, in one pass
Start with your gut, literally. If dairy doesn't bother you, a blend like ON or a value concentrate is the cheapest route to your protein target. If it does, jump to an isolate (ISO100, the Nutricost or Myprotein isolate) or go fully plant. Then sort the survivors by cost-per-serving, not tub price, and only pay the brand premium if flavour is what keeps you consistent — a tub you finish beats a cheaper one you abandon. Tested athletes override all of this and buy NSF Certified for Sport.
A word on where you buy: stick to brand-authorised sellers — iHerb SG, LAC, GNC, Ultimate Sup, Myprotein SG, or a brand's verified storefront on Shopee or Lazada. A price far below official retail is the loudest red flag there is.
Bottom line
FAQ
Is whey isolate worth the extra money? For most people, only if you're lactose-sensitive or want the lowest-fat, lowest-carb option. Isolate is ~90% protein with ~1% lactose versus concentrate's ~80% and 4–5%. If dairy sits fine with you, a concentrate hits the same protein target for less.
How much protein per serving do I actually need? Around 20–30g per serve covers most adults per sitting; all the picks here land in that range. Your daily total matters more than any single shake.
Is plant protein as good as whey? For building muscle, a sufficient daily protein intake matters more than the source. Single-source pea is slightly less complete on amino acids than whey or a multi-source plant blend, which is why blends like Orgain exist.
Are these prices current? Treat every figure as indicative. Singapore supplement prices swing hard on pack size, flavour and promo cycles, so always check the current price before buying.
We don't score what we haven't tested. These are evidence-led category picks based on published specs, third-party certifications and Singapore price comparisons, not a rated review.
Sources
- Optimum Nutrition Gold Standard 100% Whey — LAC Singapore
- Dymatize ISO100 and Ghost range — Ultimate Sup Singapore
- Myprotein Impact Whey Isolate — Myprotein Singapore
- Myprotein Impact Whey Protein (concentrate) — Myprotein Singapore
- Nutricost Grass-Fed Whey Protein Isolate — iHerb Singapore
- Best protein powder in Singapore: 15-product cost-per-serving comparison — Yahoo Life Singapore (republished SETHLUI), Apr 2026
- Lactose-free protein and concentrate vs isolate explainer — Ultimate Sup Singapore
- EHP Labs Blessed Plant Protein review — Ultimate Sup Singapore (2026)
