Mass Gainers

Fit Nitro's Mass Gainer range is built for anyone whose training and appetite call for extra calories, not just extra protein. This category carries genuine stock from Optimum Nutrition (Serious Mass), Kevin Levrone, MuscleTech (Mass Tech Extreme), Ronnie Coleman (King Mass XL), Rule 1, Russian Bear, and Labrada, spanning a wide range of calorie counts and pack sizes from 3kg up to 15lbs.

A mass gainer is typically used between meals or post-workout to help meet a higher daily calorie target. If you're new to gainers, start with a smaller pack size to find what suits your appetite and goals before committing to a larger tub.