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

The whey we stock runs from about $2.19 a serve up to $5.19, 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 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 24 September 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 $2.19 for 25g of protein. It is a whey blend, the 2.27kg tub runs 70 serves, and it is in our tested for sport range, so check the certifier's listing for your exact tub before you compete. 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 tested isolate: Dymatize Iso 100

Dymatize Iso 100 is a whey isolate at about $3.58 a serve for 25g of protein, with 74 serves in the 2.27kg tub. It is listed under Informed Choice, which uses monthly blind testing rather than testing every batch, so check that your sport accepts Informed Choice. If you get on better with an isolate than a concentrate, or you are drug-tested, this is the one most people land on. Four of the ten whey lines in this guide have tubs in our tested for sport range. Before you compete, check your exact product (and, for Informed Sport, the batch) on the certifier's site.

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 $5.00 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 25g of protein 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. If you want to skip dairy entirely, Basic Supplements Beef Isolate is a beef protein isolate at about $2.28 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. The protein powder for lactose intolerance guide compares the isolates, clear whey and plant powders we stock, with a label checklist to use before you buy.

How to pick your whey

On a budget, a blend gives you the most protein per dollar, and MusclePharm Combat at $2.19 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. If you are drug-tested, stick to the tested rows and check the certifier named on the label. 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. If grass-fed sourcing matters to you, grass-fed whey explained covers what the label actually means.

Want to see every protein side by side, not just whey? The cheapest protein powder guide lists whey and beef isolate tubs with protein per serve, price per serve and price per 25 g of protein in one table, and the full protein comparison covers plant powders, bars and ready to drink cans. Or jump straight into the whey protein collection and filter from there.

Compare the guide with the current whey protein NZ range. Read the serving size and protein entry for the flavour you want, then use the available pack options to narrow your shortlist.