Out of 10
Read 25 Reviews
Out of 10
Read 25 Reviews

RTD 51

Protein Plus!
High Protein Ready-To-Drink Shake!
Supported Goal: Build Muscle
Main Ingredient: Whey Protein
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Product Overview


So you’re looking to get big, eh? Looking to put on some real quality size? Really? How are you going to do that with those tiny protein shakes you’re drinking with minimal amounts of protein? Did you steal them from your girlfriend? Put down the girly shake and come with us. We’re going to take you into a world where only the most muscular and fit individuals come when they’re looking for a ready-to-drink protein shake. This is the world of MET-Rx®.

With 51g of protein including MET-Rx’s exclusive Metamyosyn® protein blend, you get all the protein your muscles need to recover, repair, and grow along with essential vitamins and minerals —everything you need and have been looking for.*

Each flavor contains limited carbohydrates, fats and sugars as part of the total calorie count to help you build the body you’ve always dreamed. So quit cutting your goals short with those protein shakes of the past, and grab yourself a high-performance protein powerhouse. MET-Rx® RTD51, it’s not your girlfriend’s protein shake!

Use in conjunction with an intense daily exercise program and a balanced diet including an adequate caloric intake.


There is a difference between looking big and being strong. True strength takes dedication.

Ratings & Reviews

Out of 10
RTD 51 Reviews
25 Total Ratings
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    9.0 | 4 Ratings
    9.5 | 5 Flavors
  • 10
    Creamy Vanilla
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12 - 15 Fl. Oz. Cans $37.00
12 Servings | $3.08 Per Serving
Flavor Taste Availability
Berry Blast -- In Stock
Cookies & Creme -- In Stock
Creamy Vanilla 10 In Stock
Frosty Chocolate 9.7 In Stock
Peanut Butter Cup 8.8 In Stock

What's in MET-Rx RTD 51

12 - 15 Fl. Oz. Cans Berry Blast
Serving Size 1 Can
Servings Per Container12
Amount Per Serving
Calories 230       
Calories From Fat 10       
% Daily Value **
Total Fat 1.5 g 2%
Saturated Fat .5 g 3%
Trans Fat 0 g       
Cholesterol 30 mg 10%
Sodium 190 mg 8%
Potassium 380 mg 11%
Total Carbohydrate 3 g 1%
Dietary Fiber 2 g 8%
Sugars 2 g       
Protein 51 g 102%
Vitamin A 30%
Vitamin C 50%
Calcium 100%
Iron 8%
Vitamin D 40%
Vitamin E 40%
Vitamin K 25%
Thiamin 70%
Riboflavin 50%
Niacin 45%
Vitamin B-6 50%
Folic Acid 45%
Vitamin B-12 60%
Biotin 35%
Pantothenic Acid 50%
Phosphorus 45%
Iodine 25%
Magnesium 6%
Zinc 10%
Selenium 20%
Copper 10%
Manganese 40%
Chromium 25%
Molybdate 25%
** Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs:
Water, Metamyosyn® VPR Protein Blend (Calcium Caseinate, Milk Protein Concentrate, Whey Protein Concentrate), Natural Flavors, Cellulose Gel, Vitamin And Mineral Blend (Tricalcium Phosphate, Sodium Phosphate, Sodium Ascorbate, Sodium Citrate, Dl-Alpha Tocopheryl Acetate, Niacinamide, Vitamin A Palmitate, D-Calcium Pantothenate, Ferrous Sulfate, Phytonadione, Manganese Sulfate, Cholecalciferol, Zinc Oxide, Pyridoxine Hydrochloride, Thiamin Hydrochloride, Riboflavin, Copper Sulfate, Cyanocobalamin, Folic Acid, Biotin, Chromium Chloride, Sodium Molybdate, Potassium Iodide, Sodium Selenite), Di-Potassium Phosphate, Sucralose, Cellulose Gum, Sodium Hydroxide, Acesulfame Potassium, Carrageenan, FD&C Red #3.
Contains milk ingredients.

Directions For RTD 51: Drink one to three cans per day to support your daily high protein and calorie needs. To support musclebuilding, consume approximately 1 gram of protein per pound of body weight from all dietary sources per day.* For best results, drink 1 can of RTD 51 immediately following your workout to help support muscle recovery.*

Shake Gently
Serve Chilled
Refrigerate after opening

Contents under pressure; Open slowly to reduce potential splashing.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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