Recommended products: Size Up, Sports Series, Ultramyosyn Whey, Protein Plus
 
MET-Rx was founded in the 70s of the last century and is a sub-brand of the health supplement giant NBTY. In the sports nutrition market, NBTY occupies a position that cannot be ignored, and as of 2015, NBTY has maintained a top five market share in both China and the global market. MET-Rx entered China in 2006 and accounted for 20.4% of the domestic sports nutrition market in 2015.
 
MET-Rx's protein powder products are versatile, cover a wide range of nutrients, and have an appropriate range of nutrients, and are reasonably priced and cost-effective, but the taste options are very limited and the taste is ordinary. Size Up is especially recommended here, but other products can be purchased as needed.
 
Ultramyosyn Whey is one of MET-Rx's most recognizable products, but it's also the least feature-devoid. Its protein consists of whey protein concentrate and whey protein isolate, with a content of about 67%. The calorie and cholesterol content is slightly higher, especially cholesterol, which contains about 60mg per serving, which accounts for 30% of the daily intake. Ultramyosyn Whey is a decent value, with about 5 pounds for about 440 yuan, which is less cost-effective than similar ALLMAX ALLWHEY Classic and MuscleTech Gold Nitro-N-Whey Protein Powder.
 
Protein Plus contains a variety of proteins with different absorption rates, with a protein content of about 71% and an additional glutamine, which is suitable for gym players who do high-intensity exercise. This protein powder formula and pricing is reasonable, you can buy two pounds within 300 yuan, according to the protein content, nitrogen-positive protein powder is not considered in the cost-effective list, but its calories are low, more suitable for people who control body fat.
 
From the point of view of various numerical indicators, Size Up Muscle Gainer is an outstanding weight gainer powder and the best product of MET-Rx. Its protein composition has the standard multiple absorption levels of Weight Gainer Powder, with a content of about 32%, which is the highest level in its class. In addition to glutamine, which is needed for high-intensity training, Size Up is also formulated with a rich amount of vitamins and trace elements to meet daily needs. In addition, this weight gainer is moderate in calories and has a low cholesterol content in its class, providing 30% of the daily intake per serving. 6 pounds of Size Up Muscle Gainer Powder can be purchased for about 330 yuan, which is inexpensive and can be described as a cost-effective one.
 
The actual function of Sports Series Post-Workout Protein Powder is a meal replacement, which is a special protein product of MET-Rx. It contains only 20% hydrolyzed whey protein, which is very easy to absorb, and most of the rest of the ingredients are carbohydrates that can increase satiety, with few additives and cholesterol, which is relatively healthy and natural. The Sports Series is on the pricier side, about $200 for a 1.5-pound powder, but it's still worth recommending. Despite being high in carbs, this meal replacement is low in calories and contains L-carnitine, which can be used as a daily substitute for a meal before or after exercise to aid fat loss.