Rule One R1 Mass Gainer Protein Powder

Description

Clean Mass Gaining Made Simple

Rule One R1 Mass Gainer Protein Powder is a high-calorie mass building supplement designed for men who need serious caloric support to put on size. From the team behind the original Optimum Nutrition legacy, Rule One (R1) applies a quality-first philosophy to the weight gainer category, delivering substantial calories and protein without resorting to excessive sugar or low-quality filler ingredients.

Each serving provides a significant calorie load with a protein blend anchored by whey protein isolate and concentrate, paired with complex carbohydrate sources that provide sustained energy rather than rapid blood sugar spikes.

Key Benefits

• High-calorie formula designed specifically for men who struggle to gain weight
• Protein blend led by whey isolate for a cleaner amino acid profile
• Complex carbohydrate sources provide sustained energy and glycogen replenishment
• Added creatine monohydrate to support strength and muscle volumization
• MCT fats included as an efficient energy source that is less likely to be stored as body fat
• Clean ingredient profile with no amino acid spiking
• Mixes well in a blender with good taste across available flavors

Who It’s For

R1 Mass Gainer is built for hard gainers, ectomorphs, and high-metabolism men who cannot gain weight eating whole foods alone. It is also useful during dedicated bulking phases when training volume is high and caloric demands exceed what practical meal frequency can provide. If you have tried eating more and still cannot move the scale, a quality mass gainer bridges that gap.

Rule One brings a modern approach to mass gainers by prioritizing protein quality and carbohydrate sources over simply maximizing calorie count with cheap ingredients. The brand was founded by former Optimum Nutrition leadership, and that pedigree shows in the product formulation and manufacturing standards.