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MET-Rx "Original" Meal Replacement revolutionized sports nutrition with the Metamyosyn® Protein Blend. Now new and improved, the "Original" MET-Rx Meal Replacement is back and better than ever with an upgraded formula that is free of aspartame and hydrogenated fats while still featuring the exclusive Metamyosyn Protein Blend.

Complete protein blend to help build lean muscle. Originally developed by a physician, Metamyosyn protein is based on metabolic research to help support lean muscle mass studied in three published clinical trials. In a groundbreaking study, subjects using MET-Rx Original Meal Replacement twice per day gained more muscle and strength over 12 weeks than a group receiving whey protein only supplements. Metamyosyn combines Milk Protein with fast-digesting whey protein and slow-acting casein, plus L-Glutamine and naturally occurring Branched Chain Amino Acids - Isoleucine, Leucine and Valine. The precise combination of proteins in Metamyosyn offers a sustained release of amino acids for up to 7 hours and provides your body with a highly bioavailable fuel that helps build lean muscle mass and strength.

Use MET-RX Meal Replacement any time of the day:

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Find similar products fitting all of the checked categories. Gluten Free    Protein (Bars/Powder/MRP/RTD)      Meal Replacement    Protein - Blend

MET-Rx Drink Mix (MET-Rx) - Average rating (17 reviews)  - Write a review Show Reviews Reviews (12) (0) (1) (3) (1) See all 17 reviews   1 of 1 people found the following review helpful. April 14, 2007 Reviewer: David in Nebraska I have been using this product for years. Because of my busy schedule, it has been hard to maintain a good diet. Met-Rx meal replacement shakes have enabled me to maintain a healthy lifestyle. I am currently deployed to Iraq and find the use of this product more needed now than ever before. This review is specific to MET-Rx Drink Mix, Extreme Chocolate Was this review helpful to you? Yes  No January 31, 2010 Reviewer: Dan in Maine Great MRP! Love the price....around $1.70 a serving and perfect for first shake in the morning or post workout even before bed. It has BCAA and glutamine ....I'm going to add creatine to my post workout shakes and this protein has it all! I have been taking Met-rx for years and never been disappointed. This review is specific to MET-Rx Drink Mix, Extreme Chocolate Was this review helpful to you? Yes  No October 03, 2009 Reviewer: Thomas in Wisconsin I have been using Met-Rx for years. One/two packets per day and it is a great "when I need to cut the Calories to 1500 per day, Always top of the list supplement"! Was this review helpful to you? Yes  No October 03, 2009 Reviewer: Thomas in Wisconsin Top of the line supplement. One Met-rx per day does wonders! This review is specific to MET-Rx Drink Mix, Original Vanilla Was this review helpful to you? Yes  No April 01, 2009 Reviewer: Jerry in Massachusetts The new formula for Extreme Chocolate is good. Not much change from the old one. Was this review helpful to you? Yes  No See more reviews