Mass Gainer

Mass Gainers NZ – High-Calorie Weight Gain Supplements

Looking for the best mass gainer in NZ to build serious size and strength? ProBuilder’s range of high-calorie weight gain supplements is designed for hardgainers, athletes, and anyone in a bulking phase who struggles to meet daily calorie targets through food alone.

Mass gainers combine protein, carbohydrates, and essential nutrients to support muscle growth, recovery, and sustained energy. Whether you’re training for hypertrophy, strength, or overall weight gain, our premium formulas help you stay in a consistent calorie surplus — the key to building lean muscle mass.

✔ Fast NZ-wide shipping
✔ Trusted international supplement brands
✔ Secure checkout in NZD

Browse the full range below.

Mass Gainers NZ – High-Calorie Weight Gain Supplements

Looking for the best mass gainer in NZ to build serious size and strength? ProBuilder’s range of high-calorie weight gain supplements is designed for hardgainers, athletes, and anyone in a bulking phase who struggles to meet daily calorie targets through food alone.

Mass gainers combine protein, carbohydrates, and essential nutrients to support muscle growth, recovery, and sustained energy. Whether you’re training for hypertrophy, strength, or overall weight gain, our premium formulas help you stay in a consistent calorie surplus — the key to building lean muscle mass.

✔ Fast NZ-wide shipping
✔ Trusted international supplement brands
✔ Secure checkout in NZD

Browse the full range below.

  • Get Raw Nutrition Fuel

    Get Raw Nutrition Fuel

    NZ $79.95     Select options This product has multiple variants. The options may be chosen on the product page
  • mass gainer

    Pack Nutrition Mythic Mass 2lb

    NZ $39.00     Select options This product has multiple variants. The options may be chosen on the product page
  • Usn Nutrition Anabolic Carb

    Usn Nutrition Anabolic Carb

    NZ $49.90     Select options This product has multiple variants. The options may be chosen on the product page
  • Sale! MuscleTech Cell-Tech 6lb

    MuscleTech Cell-Tech 6lb

    Original price was: NZ $129.00.Current price is: NZ $99.00.     Select options This product has multiple variants. The options may be chosen on the product page
  • Sale! USN Anabolic All In-One Mass Gainer

    USN Anabolic All In-One Mass Gainer

    Price range: NZ $119.00 through NZ $129.00     Select options This product has multiple variants. The options may be chosen on the product page

How to Choose the Right Mass Gainer

Not all mass gainers are formulated the same. Your ideal choice depends on your metabolism, calorie requirements, and training intensity.

🔥 High-Calorie Gainers (Hardgainers)

Best for individuals who struggle to gain weight:

  • 800–1200+ calories per serving

  • 40–60g protein

  • Higher carbohydrate content

  • Suitable for intense bulking phases

⚖️ Lean Mass Gainers

For controlled weight gain with reduced fat accumulation:

  • Moderate calorie range

  • Balanced protein-to-carb ratio

  • Lower added sugars

🕒 When Should You Take a Mass Gainer?

  • After workouts to support recovery

  • Between meals to increase daily calorie intake

  • Consistently each day during a bulking phase

Results depend on total calorie intake and structured training.

Frequently Asked Questions

What is a mass gainer?

A mass gainer is a high-calorie supplement that combines protein and carbohydrates to help increase total daily calorie intake. It is commonly used during bulking phases to support muscle growth and recovery when whole food intake is not enough to maintain a calorie surplus.

Who should use a mass gainer?

Mass gainers are suitable for hardgainers, athletes training multiple times per week, individuals with fast metabolisms, and anyone struggling to consume enough calories from whole foods alone to support weight gain or muscle growth.

What is the best mass gainer in NZ?

The best mass gainer in NZ depends on your calorie requirements, metabolism, and training intensity. Higher-calorie formulas are ideal for aggressive bulking, while moderate-calorie options may be better suited for lean muscle gain with controlled fat accumulation.

When should I take a mass gainer?

Mass gainers are commonly taken after workouts to support recovery, or between meals to increase daily calorie intake. Consistency is important — maintaining a steady calorie surplus over time supports muscle growth and weight gain.

Is mass gainer safe?

Mass gainers are generally safe when used as directed. Always follow serving recommendations and consult a qualified healthcare professional before starting supplementation, especially if you have existing medical conditions.

Can I take mass gainer every day?

Yes, mass gainers can be taken daily if needed to help maintain a consistent calorie surplus. Monitor your total calorie intake and adjust serving sizes based on your training goals and desired body composition.

 

Fast NZ-Wide Delivery on Mass Gainers

ProBuilder offers fast and reliable delivery across New Zealand, including Auckland, Wellington, Christchurch, Hamilton and regional areas.

  • Orders processed quickly

  • Secure online payment in NZD

  • Authentic products sourced from authorised distributors

  • Packed carefully for safe transit

We understand that consistency matters during a bulking phase — that’s why we prioritise efficient dispatch so you can stay on track with your training and nutrition goals.

If you have questions about stock availability or delivery timelines, our NZ-based support team is ready to assist.