Extreme Mass by International Protein

Extreme Mass – High-Calorie Weight Gainer for Serious Size

Extreme Mass by International Protein is a premium high-calorie mass gainer designed to support muscle growth, weight gain, and sustained energy. Built for those who struggle to consume enough calories through food alone, this advanced formula delivers a powerful combination of quality proteins, complex carbohydrates, and energy-dense MCT oils.

Unlike typical mass gainers, Extreme Mass is formulated to provide a consistent stream of calories and nutrients, helping fuel intense training and support muscle development.

Advanced Muscle-Building Formula

Extreme Mass features a comprehensive multi-source protein blend to support muscle repair, growth, and recovery:

Hydrolysed Whey Protein Isolate (WPI)

High Glycomacropeptide WPI

Whey Protein Concentrate (WPC)

Calcium Caseinate

Egg Albumen

This diverse amino acid profile helps support nitrogen balance, a key factor in building and maintaining lean muscle mass.

High-Calorie Energy Support

To help fuel performance and weight gain, the formula includes:

Complex carbohydrates for sustained energy

Glucose and rice starch to support metabolic activity

MCT oils for fast, efficient energy

MCTs (medium-chain triglycerides) are a source of rapidly available energy and are commonly used to support performance and calorie intake without unnecessary heaviness.

Key Benefits

Supports Weight Gain & Muscle Growth
Provides a high-calorie formula ideal for increasing size and mass.

Sustained Energy Release
Combines fast and slow-digesting nutrients to fuel performance throughout the day.

Complete Amino Acid Profile
Supports muscle recovery, growth, and nitrogen balance.

Energy-Dense Formula
Includes MCT oils and carbohydrates to help meet high daily calorie needs.

Ideal for Hard Gainers
Perfect for individuals who struggle to gain weight or maintain a calorie surplus.

Who Is It For?

Extreme Mass is ideal for:

Bodybuilders and strength athletes

Hard gainers needing extra calories

High-performance athletes with demanding energy requirements

Anyone looking to increase size, strength, and overall mass

Suggested Use

Mix up to 100g (3 scoops) with 500ml of milk in a shaker or blender.

Consume 2–3 servings daily in addition to your regular meals.
Best times to use include:

Mid-morning

Mid-afternoon

Before bed

Extreme Mass provides a powerful, calorie-rich solution for those serious about gaining size, strength, and performance.