Best Protein Powder NZ (2026): Whey, Isolate and Blends Compared

Protein powder is the simplest way to top up how much protein you eat in a day, and the right one depends on your budget, how well you handle dairy and the format you will actually stick with. We stock protein as powders, bars, ready to drink cans and protein water, from brands including Basic Supplements, Dymatize, Ghost, Grenade and Nexus. Across the protein range prices run from $5.08 to $264.85 as at 7 September 2026.

Protein powder types compared

Tub price tells you little on its own, because scoop sizes and serves per tub differ between brands. Price per 25 g of protein puts every format on the same footing, so here is how the types in our protein powder range compare.

Protein and calories per serve as listed on each label. The price column uses each type's pack with the most protein per dollar, where the label lists protein. NZ Supps prices at 24 September 2026.

Whey and isolate

Whey concentrate costs less per serve and mixes thicker, while whey protein isolate is filtered further so it carries less lactose and less fat per scoop. If price is the deciding factor, concentrate does the job. If dairy sits badly with you or you want a thinner shake, isolate is worth the extra, and whey isolate vs concentrate walks through the difference.

Plant and dairy-free

Plant options are built on pea, rice and similar sources, so they taste earthier and mix a little grittier than whey. They suit you if dairy is off the table for diet or comfort reasons. One thing to know before you browse plant and vegan protein: Nexus Super Protein is collagen peptides rather than whey, so it behaves differently from a standard shake.

Collagen comes from animal sources, so it is not a plant protein. Plant powders in the range include Ghost Vegan Protein (20 to 21 g of protein a serve, depending on flavour), Pillar Performance Vegan Protein Isolate (20.5 g, and tested for sport) and Macro Mike Premium Almond Protein (21.2 to 23.7 g, depending on flavour).

Bars, RTDs and protein water

Protein bars and RTD protein cost more per gram of protein than a tub, but you can keep them in a bag and they need no shaker. Protein water is clearer and lighter than a milky shake, which some people prefer after training while others find it too thin.

Powder needs a shaker bottle, but a tub of whey or beef isolate costs less than half as much per 25 g of protein as a bar or a ready to drink shake. Keep bars and RTDs for the days a shake is not practical.

How to choose

Work out how much protein you want across the day, then pick the format you will keep buying. Check the serve size and serves per tub on the label rather than the headline weight, since scoops differ between brands. If you are torn between two, buy the smaller size first and see how the flavour and mixability land.

Four common starting points, priced per 25 g of protein at 24 September 2026:

If you find it hard to eat enough, a mass gainer adds calories as well as protein. Basic Supplements Mass Gainer carries 50 g of protein and 1,030 calories a serve, against 120 to 150 calories for a scoop of whey.

More help before you buy: work out how much protein you need per day, see the price per 25 g of protein, compared across every tub, or start with the protein powder guide for beginners. Goal guides cover the best protein powder for muscle gain and protein powder for women, and if flavour is what puts you off, the best tasting protein powder guide lists what customers reorder.

Use the comparisons in this guide to browse protein powder NZ. Check each product's protein source and serving size, then compare the current pack options before choosing a flavour for your routine.