Looking to add muscle and improve your physique? Our Rule1 Lean Muscle Builder is designed for serious athletes aiming to gain weight and lean mass efficiently. With over 560 calories per serving, this premium protein powder combines a perfect blend of fast and slow-digesting proteins—including whey, milk, and casein—to support muscle growth and recovery. The rich mix of multi-source carbs provides quick energy, while the lipid blend with MCT oil, avocado, flaxseed, and sunflower oils fuels your workouts and helps maintain energy levels throughout the day.
This weight gainer offers a balanced 3:1 carb to protein ratio, making it one of the best weight gain supplements for muscle growth. Its comprehensive amino acid profile, including over 14 grams of essential amino acids and 6 grams of BCAAs, supports muscle repair and prevents fatigue. Certified by Informed Choice and regularly tested for banned substances, it’s a trusted choice for athletes committed to clean supplements.
If you’re wondering how to use this product effectively, simply mix the recommended serving with water or milk post-workout or as a calorie-dense meal replacement. Whether you’re looking to buy protein powder for weight gain or find cheap weight gainer supplements online, Rule1 offers a quality solution tailored for muscle builders and serious fitness enthusiasts.
Barbara Perez (verified owner) –
I’ve been using Rule1 for a few months now and have seen serious muscle gains. It’s easy to mix and tastes great too!
Margaret Burke (verified owner) –
Great value for the price. The quality of ingredients makes a noticeable difference in my recovery and muscle growth.
Rhonda Richardson (verified owner) –
If you’re looking for the best protein powder for lean mass, this one definitely delivers. Highly recommend!