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Buy Whey Protein in NZ

Buy your whey protein from NZ’s trusted supplement store with our premium selection of quality ingredients and incredible tastes. Ideally suited for anyone aiming to build muscle, improve fitness levels, or add a protein boost to their day.

Renowned for its help with building lean muscle mass, whey protein powder provides all nine essential amino acids that the human body cannot synthesise on its own. These amino acids are integral to various bodily functions, most notably the growth and repair of muscles, which is why whey protein is a fantastic supplement for muscle-building regimes.

Browse our selection and find the perfect match for your lifestyle and taste buds. Whether you're a dedicated athlete, a gym enthusiast, or someone just looking to up their protein intake, our whey protein powders are here to boost your daily protein intake, one scoop at a time.

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  • OPTIMUM NUTRITION GOLD STANDARD 100% WHEY 5LB - Bay Supplements
    $149.95 - $149.95
    $149.95
    $149.95 - $149.95
    $149.95

    OPTIMUM NUTRITION GOLD STANDARD 100% WHEY 5LB

    Optimum Nutrition

    OPTIMUM 100% WHEY GOLD STANDARD WITH FASTER-ACTING HYDROWHEY PACKED WITH WHEY PROTEIN ISOLATES AND FAST-ACTING HYDROWHEY WHEY PEPTIDES!Optimum 1...

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    $149.95 - $149.95
    $149.95
    $149.95 - $149.95
    $149.95
  • MUSCLETECH NITRO TECH 4LB - Bay Supplements
    $129.95 - $129.95
    $129.95
    $129.95 - $129.95
    $129.95

    MUSCLETECH NITRO TECH 4LB

    Muscletech

    BUILD MORE LEAN MUSCLE AND INCREASE STRENGTH AND PERFORMANCE WITH MUSCLETECH NITRO TECH PROTEIN! 30g Protein per serve Primarily Whey Protein Iso...

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    $129.95 - $129.95
    $129.95
    $129.95 - $129.95
    $129.95
  • OPTIMUM NUTRITION GOLD STANDARD 100% WHEY 2LB - Bay Supplements
    $79.95 - $79.95
    $79.95
    $79.95 - $79.95
    $79.95

    OPTIMUM NUTRITION GOLD STANDARD 100% WHEY 2LB

    Optimum Nutrition

    PACKED WITH WHEY PROTEIN ISOLATES AND FAST-ACTING HYDROWHEY WHEY PEPTIDES! Optimum 100% Whey Protein won the Supplement Of The Year and Protein Po...

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    $79.95 - $79.95
    $79.95
    $79.95 - $79.95
    $79.95
  • MUSCLETECH NITRO TECH 100% WHEY GOLD 5LB - Bay Supplements
    $139.95 - $139.95
    $139.95
    $139.95 - $139.95
    $139.95

    MUSCLETECH NITRO TECH 100% WHEY GOLD 5LB

    Muscletech

    Nitro-Tech 100% Whey Gold features 24g whey protein peptides and isolate to support fast recovery and help you build more lean muscle mass.   Nitro...

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    $139.95 - $139.95
    $139.95
    $139.95 - $139.95
    $139.95
  • Sold out
    $229.95 - $229.95
    $229.95
    $229.95 - $229.95
    $229.95

    MUSCLETECH NITRO TECH 10LB

    Muscletech

    NitroTech is a scientifically engineered whey protein powder designed for anyone looking to build more muscle, improve their strength and enhance o...

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    $229.95 - $229.95
    $229.95
    $229.95 - $229.95
    $229.95
    Sold out
  • OPTIMUM NUTRITION GOLD STANDARD 100% WHEY 10LB - Bay Supplements
    $269.95 - $269.95
    $269.95
    $269.95 - $269.95
    $269.95

    OPTIMUM NUTRITION GOLD STANDARD 100% WHEY 10LB

    Optimum Nutrition

    OPTIMUM 100% WHEY GOLD STANDARD WITH FASTER-ACTING HYDROWHEY PACKED WITH WHEY PROTEIN ISOLATES AND FAST-ACTING HYDROWHEY WHEY PEPTIDES!Optimum 1...

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    $269.95 - $269.95
    $269.95
    $269.95 - $269.95
    $269.95
  • MUSCLEPHARM COMBAT 100% WHEY 5lb - Bay Supplements
    $114.95 - $139.95
    $114.95
    $114.95 - $139.95
    $114.95

    MUSCLEPHARM COMBAT 100% WHEY 5lb

    Musclepharm

    WHY MUSCLEPHARM IS YOUR DREAM POST-WORKOUT PROTEIN Intense workouts demand complex nutrition. MusclePharm is the perfect way to get that nutrition...

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    $114.95 - $139.95
    $114.95
    $114.95 - $139.95
    $114.95
  • $149.95 - $149.95
    $149.95
    $149.95 - $149.95
    $149.95

    PVL 100% WHEY GOLD 6LB

    PVL

    PVL 100% Whey Gold 6lb 24g Grass-fed Whey Protein 100% Whey Sourced Easy Mixing Enzymes for Improved digestion Informed Choice Tested 2 Mouth Wa...

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    $149.95 - $149.95
    $149.95
    $149.95 - $149.95
    $149.95
  • MUTANT WHEY NEW & IMPROVED 5LB - Bay Supplements
    $124.95 - $124.95
    $124.95
    $124.95 - $124.95
    $124.95

    MUTANT WHEY NEW & IMPROVED 5LB

    Mutant

    MUTANT WHEY NEW & IMPROVED! BUILD MUSCLE | NEW AMAZING TASTE | BETTER MIX-ABILITY    Mutant's #1 selling Protein is now even better tasting &am...

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    $124.95 - $124.95
    $124.95
    $124.95 - $124.95
    $124.95
  • MUSCLETECH NITRO TECH 100% WHEY GOLD 10LB - Bay Supplements
    $229.95 - $229.95
    $229.95
    $229.95 - $229.95
    $229.95

    MUSCLETECH NITRO TECH 100% WHEY GOLD 10LB

    Muscletech

    MuscleTech Nitro-Tech Whey Gold features whey protein isolate and peptides, this ultra-pure, rapidly absorbed and quickly digested protein is engin...

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    $229.95 - $229.95
    $229.95
    $229.95 - $229.95
    $229.95
  • Sold out
    $69.95 - $84.95
    $69.95 - $84.95
    $69.95 - $84.95
    $69.95

    TRIP NUTRITION FUEL WHEY PROTEIN POWDER 5LB

    Trip Nutrition

    Introducing Trip Nutrition - affordable protein that doesn't skimp on quality! Trip Nutrition's FUEL is comprised of premium grass-fed whey and con...

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    $69.95 - $84.95
    $69.95 - $84.95
    $69.95 - $84.95
    $69.95
    Sold out
  • MUSCLETECH PLATINUM 8 HOUR PROTEIN 4.6LB - Bay Supplements
    Sold out
    $114.95 - $114.95
    $114.95
    $114.95 - $114.95
    $114.95

    MUSCLETECH PLATINUM 8 HOUR PROTEIN 4.6LB

    Muscletech

    When you’re unable to have a meal for several hours (like when you’re sleeping), having a protein source that’s slow-digesting is important to help...

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    $114.95 - $114.95
    $114.95
    $114.95 - $114.95
    $114.95
    Sold out
  • PACK NUTRITION LEVEL 1 WHEY PROTEIN POWDER 5LB - Bay Supplements
    Sold out
    $84.95 - $84.95
    $84.95
    $84.95 - $84.95
    $84.95

    PACK NUTRITION LEVEL 1 WHEY PROTEIN POWDER 5LB

    Pack Nutrition

    At Pack Nutrition, great products start with great TASTE. Our philosophy: Go big (on taste) or go home. Gone are the days when you need to chug bac...

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    $84.95 - $84.95
    $84.95
    $84.95 - $84.95
    $84.95
    Sold out
  • EHP LABS OXYWHEY LEAN WELLNESS PROTEIN 2LB - Bay Supplements
    $79.95 - $79.95
    $79.95
    $79.95 - $79.95
    $79.95

    EHP LABS OXYWHEY LEAN WELLNESS PROTEIN 2LB

    EHP Labs

    OxyWhey is an industry-first, innovative and science-based Lean Wellness Protein formula made from 100% pure, lean, non-GMO whey protein. All flavo...

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    $79.95 - $79.95
    $79.95
    $79.95 - $79.95
    $79.95
  • MUSCLETECH NITRO TECH 1.5LB - Bay Supplements
    Sold out
    $49.95 - $49.95
    $49.95
    $49.95 - $49.95
    $49.95

    MUSCLETECH NITRO TECH 1.5LB

    Muscletech

    NitroTech is a scientifically engineered whey protein powder designed for anyone looking to build more muscle, improve their strength and enhance o...

    View full details
    $49.95 - $49.95
    $49.95
    $49.95 - $49.95
    $49.95
    Sold out
  • $129.95 - $129.95
    $129.95
    $129.95 - $129.95
    $129.95

    RULE 1 WHEY BLEND 5LB

    Rule 1

    R1 Whey Blend features: 80%*+ protein per scoop - NO spiking 24g protein/serving - 100% Pure Whey Blend Naturally rich in BCAAs + Glutamine Anytim...

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    $129.95 - $129.95
    $129.95
    $129.95 - $129.95
    $129.95
  • MUSCLETECH NITRO-TECH 100% WHEY GOLD 2LB - Bay Supplements
    Sold out
    $79.95 - $79.95
    $79.95
    $79.95 - $79.95
    $79.95

    MUSCLETECH NITRO-TECH 100% WHEY GOLD 2LB

    Muscletech

    Nitro-Tech 100% Whey Gold features 24g whey protein peptides and isolate to support fast recovery and help you build more lean muscle mass.   This ...

    View full details
    $79.95 - $79.95
    $79.95
    $79.95 - $79.95
    $79.95
    Sold out
  • $159.95 - $159.95
    $159.95
    $159.95 - $159.95
    $159.95

    MUTANT WHEY NEW & IMPROVED 10LB

    Mutant

    Mutant Whey 10LB New & Improved! BUILD MUSCLE | NEW AMAZING TASTE | BETTER MIX-ABILITY  Mutant's #1 selling Protein is now even better tasting ...

    View full details
    $159.95 - $159.95
    $159.95
    $159.95 - $159.95
    $159.95
  • $64.95 - $64.95
    $64.95
    $64.95 - $64.95
    $64.95

    RULE 1 WHEY BLEND 2LB

    Rule 1

    R1 WHEY BLEND 100% WHEY PROTEIN FORMULA Our three-whey blend offers the perfect mix of nutritional quality, great taste, and bang for your buck. 10...

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    $64.95 - $64.95
    $64.95
    $64.95 - $64.95
    $64.95
  • NOTHING NAUGHTY WHEY PROTEIN 1KG - Bay Supplements
    $49.95 - $49.95
    $49.95
    $49.95 - $49.95
    $49.95

    NOTHING NAUGHTY WHEY PROTEIN 1KG

    Nothing Naughty

    Nothing Naughty Premium Whey Protein is premium, NZ grass-fed whey protein blended with all natural flavours and sweetened with natural fruit extra...

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    $49.95 - $49.95
    $49.95
    $49.95 - $49.95
    $49.95
  • Sold out
    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95

    GHOST WHEY PROTEIN 2LB

    Ghost

    Ghost 100% Whey Protein packs a big protein punch that your body will welcome, thanks to a soy-free, gluten-free and delicious tasting formula. Gho...

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    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95
    Sold out
  • Sold out
    $129.95 - $134.95
    $129.95
    $129.95 - $134.95
    $129.95

    TRIP NUTRITION WHEY PROTEIN POWDER 10LB

    Trip Nutrition

    ntroducing Trip Nutrition - affordable protein that doesn't skimp on quality! Trip Nutrition's FUEL is comprised of premium grass-fed whey and cont...

    View full details
    $129.95 - $134.95
    $129.95
    $129.95 - $134.95
    $129.95
    Sold out
  • MUTANT WHEY DUAL CHAMBER BAG 4LB - Bay Supplements
    Sold out
    $92.95 - $92.95
    $92.95
    $92.95 - $92.95
    $92.95

    MUTANT WHEY DUAL CHAMBER BAG 4LB

    Mutant

    NEW IMPROVED TASTE! MUTANT WHEY is now tastier, richer and WAY more decadent than ever! Made with 100% whey protein and the absolute best flavors ...

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    $92.95 - $92.95
    $92.95
    $92.95 - $92.95
    $92.95
    Sold out
  • Save 36% Save %
    $124.95
    $124.95 - $124.95
    $124.95
    $79.95
    $79.95 - $79.95
    $79.95

    MUTANT WHEY NEW & IMPROVED 5LB

    Mutant

    MUTANT WHEY NEW & IMPROVED! BUILD MUSCLE | NEW AMAZING TASTE | BETTER MIX-ABILITY    Mutant's #1 selling Protein is now even better tasting &am...

    View full details
    $124.95
    $124.95 - $124.95
    $124.95
    $79.95
    $79.95 - $79.95
    $79.95
    Save 36% Save %

Your Questions Answered

What is whey protein?

Whey protein is a high-quality protein powder derived from the liquid by-product of cheese production, known as whey. Packed with essential amino acids, it's an excellent supplement for muscle repair and growth, making it a go-to supplement for athletes and gym-goers.

How much whey protein powder should I have per day?

The amount of whey protein you have daily depends on several factors, including body weight, activity level, and overall protein requirements. A general guide suggests that 1.2 to 2.2 grams of protein per kilogram of body weight benefits those doing regular training or exercising. Every whey protein powder will have its own dosing information on the back, which you should follow. If in doubt, consult your clinician to tailor the suitable amount for your needs.

What is the difference between whey protein and whey isolate?

Whey isolate is a more refined form of whey protein, which goes through further processing to remove most fats and lactose. This means whey isolate has a higher protein content by weight than standard whey protein powder concentrates. This makes whey isolate an excellent option for those looking to increase their protein intake without the additional fats and carbohydrates or for individuals sensitive to lactose.

How is whey protein made?

Whey protein is made from the coagulation of milk during the cheese-making process, which separates the solid curds from the liquid whey. The liquid is then pasteurised and dried into a powder. Whey protein powder is a great supplement that can be easily mixed into shakes, smoothies, and other recipes to increase protein intake.