FREE Get a FREE MET-Rx Shaker Bottle with the online purchase of $50 or more of any MET-Rx products. OR Get a FREE MET-Rx T-Shirt with a purchase of $75 or more of any MET-Rx products. You will be prompted at Checkout to accept this offer if your order qualifies. Do not add the item to your shopping cart unless you want to purchase it. While supplies last.

MET-Rx "Original" Meal Replacement revolutionized sports nutrition with the Metamyosyn® Protein Blend. 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. Originally developed by a physician, Metamyosyn protein is based on metabolic research to help support lean muscle mass.*

Metamyosyn combines Milk Protein with slow-acting casein, plus L-Glutamine. Milk Protein is a natural source of whey and casein, for fast and slow digesting properties, and each protein source within Metamyosyn provides naturally occurring Branched Chain Amino Acids - Isoleucine, Leucine and Valine. The precise combination of proteins in Metamyosyn offers a sustained release of amino acids and provides your body with a highly bioavailable fuel that helps support lean muscle mass and strength.

Show Customized Find Customized Find

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 4.2 (20 reviews)  - Write a review Show Reviews Reviews (15) (0) (1) (3) (1) See all 20 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 April 25, 2013 Reviewer: Ronald in California MET-Rx is awesome, my workouts are noticeably more intense when I drink it an hour before. I've been buying from Netrition for 13 years now, they have a perfect track record, the best supplier in the business for sure. This review is specific to MET-Rx Drink Mix, Extreme Chocolate Was this review helpful to you? Yes  No February 20, 2013 Reviewer: David in New York Easy to use packets at home or on the road. Tastes great and helps tremendously during recovery. Reasonably priced when you purchase the 40 pack. This review is specific to MET-Rx Drink Mix, Extreme Chocolate Was this review helpful to you? Yes  No February 20, 2012 Reviewer: Josh in Massachusetts Met-Rx is the original, and after all these years, still the best MRP. I've tried them all, and analyzed all their nutritional profiles. Met-Rx wins overall. They are the best tasting and the thickest, most filling meal replacement. The protein blend is very good - plenty of slow digesting proteins. Great profile of micro-nutrients including lots of potassium. The 3 grams of fiber is a nice touch as well. All the while, Met-Rx is somehow the most affordable MRP (or at least close or tied with a couple others). Met-Rx wins. 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 See more reviews