Clean Protein Gainer

(15 reviews) Write a Review
Calculated at Checkout


High-Protein Lean Gain Formula

You already have a decent base, but you want to add mass. Not just any mass, quality mass. Enter R1 Gain – a lean gainer formula with heavy emphasis on protein. 50 grams worth. Unlike mass gainers that focus on total calories, lean gainers take into consideration where the calories are coming from. Fewer carbs. Fewer sugars. More protein. Quality gains.

  • ZERO Creamers
  • ZERO Spiking
  • ZERO Soy Protein


High-Calorie Weight Gain Formula

  • 530 calories *
  • 50g all-whey protein – whey isolate primary protein source*
  • 75g complex carb blend with organic rice bran and Carb 1™ *
  • Packed with BCAAs and other key amino acids*
  • Carefully blended and packaged in an NSF GMP facility in the USA

* Per Serving u Amino acids are naturally occurring and approximated.


Tasty Shakes: Mix two (2) scoops of R1 Gain™ with approx. 14-16 oz. of water, milk or your favorite beverage in a shaker cup or glass with a spoon.

Juicy Smoothies: Add your favorite fruit and ice to the above, mix in blender and enjoy!

Allergen Information

contains Milk, Soy and Wheat.

Chocolate Fudge
Vanilla Creme
Cookies and Creme
What is the difference between a weight gainer and a lean gainer?
Weight gainers are designed for maximum size. Lean gainers contain fewer calories, but provide as much or more protein as weight gainers. Weight gainers are suggested for "hardgainers" with smaller appetites and/or faster metabolisms. Lean gainers tend to be used by athletes that already have a good base and are looking to add size more gradually. Pound for pound, lean gainers are more expensive than weight gainers.
What is the best way to use R1 Gain?
R1 Gain should be combined with a balanced diet and exercise. Use R1 Gain in place of one or more of your daily protein shakes for extra calories. The complex carbs in R1 Gain also help refeed glycogen stores after workouts.
How does R1 Gain differ from R1 LBS?
R1 Gain is higher in protein and contains fewer calories and carbohydrates than R1 LBS. R1 Gain is considered a lean gainer. R1 LBS is a traditional weight gainer with over 1,000 calories.

15 Reviews

  • 5

    Marco Chavez

    Posted by Marco Chavez on Dec 4th 2018

    Delicious shakes well mixed well love your product

  • 4

    Good product

    Posted by Rocco on Nov 1st 2018

    Very good preforms well and good tasting

  • 5


    Posted by Nikolai on Aug 24th 2018

    Ok so I’ve been using it for the past couple of months and by far this is the best mass gainer ever. Low sugar, high quality protein and fairly low sodium. I eat about 3000 calories a day and the 500 calories from this gainer has really helped me to them GAINZZZ. Honestly the price is worth it.

  • 4

    Very effective

    Posted by Jamaal on Aug 14th 2018

    I had struggled with finding a protein powder not loaded with lots of carbs and sugar. I've used those types in the past and a lot of the gains was just as much fat as muscle. R1 Gain is the protein powder I had been looking for.

    It's clean, easy to drink. Has a good ratio of protein compared to carbs. I've gained at least five pounds of muscle since taking it.

  • 5

    Rule 1 Gain

    Posted by Charles Glagola on Aug 6th 2018

    All the flavors taste excellent. I have gained has 15 pounds. No bloating. The product does wss it says. Have been using for 1 year

  • 5

    Thanks Rule 1

    Posted by Asad qasemi on Aug 5th 2018

    I have bought Rule 1 Gain , vanilla flavour. It tastes really amazing, feels like to drink more and more ... just found my favourite brand and one. Honestly and very highly recommend.

  • 5

    Rule 1 Protein

    Posted by De’Shawn on Jul 30th 2018

    By far the best protein I’ve taken and I’ve taken my fair share. It’s smooth and not clumpy when you mix it. Taste amazing with milk but it taste good with water and I’ve never said that about any other protein. Gains are definitely showing. Very high quality.

  • 4


    Posted by Bino on May 21st 2018

    Everyone saw results and wanted to know what I was taking. It tastes great too

  • 4

    On the product

    Posted by Nicolas Fernandez on Mar 6th 2018

    Good protine to gain size just do cardio or you'll get fat.