Best Whey Protein NZ: What We Actually Stock and What It Costs

The whey we stock runs from about $2.31 a serve up to $5.50, and almost all of it lands 25g of protein per scoop. MusclePharm Combat 100% Whey is the cheapest per serve, Dymatize Iso 100 leads the batch-tested isolates, and Ghost Clear Whey is the leanest clear option. Here is the full shortlist with real per-serve costs.

Whey is the default protein powder for good reason: it mixes easily, tastes better than most alternatives, and gives you a solid 24 to 27g of protein per scoop. Rather than list generic claims, here is exactly what we stock across the whey protein range, what type each one is, and what it costs per serve. Prices are as at 12 July 2026, so check the live product page before you buy.

Cheapest whey per serve: MusclePharm Combat 100% Whey

MusclePharm Combat 100% Whey is the cheapest whey we stock per serve, at about $2.31 for 25g of protein. It is a whey blend, the 2.27kg tub runs 70 serves, and it carries Informed certification, so each batch is screened against the WADA banned list. If you want the most protein for your money and do not mind a blend rather than a pure isolate, this is the value pick.

Best batch-tested isolate: Dymatize Iso 100

Dymatize Iso 100 is a whey isolate at about $3.51 a serve for 25g of protein, with 74 serves in the 2.27kg tub. It is Informed Sport certified and one of the leanest, lowest-lactose whey powders on the market. If you get on better with an isolate than a concentrate, or you are drug-tested, this is the one most people land on.

Leanest clear whey: Ghost Clear Whey Isolate

Ghost Clear Whey Isolate is a juice-style clear protein rather than a milky shake. It carries 25g of protein for 100 calories a serve, zero sugar and zero fat, at about $5.50 a serve. It costs more than a standard whey, but if you find thick milkshake shakes heavy, a clear whey is a lighter way to hit the same protein.

The full whey shortlist

Here is the wider shortlist, sorted cheapest first. All figures are protein per serve from the label and price per serve from the live tub price.

If you do not do dairy

Whey is a dairy protein, so it is not for everyone. If lactose is a problem, an isolate carries less of it than a concentrate as a matter of filtration, which is one reason people move up to Iso 100 or IsoPept. If you want to skip dairy entirely, Basic Supplements Beef Isolate is a beef protein isolate at about $2.42 a serve for 27g of protein, and our plant protein range runs around 20g a serve from Ghost Vegan and Pillar Vegan Isolate. None of those are whey, but they cover the same job if whey does not suit you.

How to pick your whey

On a budget, a blend gives you the most protein per dollar, and MusclePharm Combat at $2.31 a serve is hard to beat. If you want leaner macros and less lactose in the powder, an isolate is filtered further to strip most of the lactose and fat, so look at Dymatize Iso 100 or EHPlabs IsoPept. If you are drug-tested, stick to the batch-tested rows. The isolate vs concentrate guide breaks the difference down in plain English, and the serving size guide shows exactly how much you get per scoop.

Want to see every protein side by side, not just whey? The full protein comparison lists our entire range with protein per serve and price per serve in one table. Or jump straight into the whey protein collection and filter from there.