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Meal Replacement products (MRPs) are widely used to support training goals, from weight loss to muscle building.

MRP's come in powder form, bars and pre-mixed ready-to-drink formulas. The huge variety of meal replacements available can cause confusion when trying to choose the right product.

This guide provides all the information you need to make the right choices.

History of Meal Replacements

Meal replacements were originally fed to patients in hospitals who couldn't swallow whole food. MRP's provided all the nutrients that patients required for maintenance, growth and recovery. Meal replacements have come a long way since their original use in hospitals. They are an essential tool for many individuals, from the physically active to elite athletes, to provide optimum nutrition to support performance.

What are Meal Replacements?

Meal replacements provide a high quality alternative to whole food and provide precise amounts of protein, carbohydrate, vitamins and minerals for optimum nutrition

Meal replacements provide a high quality alternative to whole food and provide precise amounts of protein, carbohydrate, vitamins and minerals for optimum nutrition. Available in powders you mix into shakes, bars, and pre-mixed ready to drink formulas for convenience. Meal replacements are handy nutritious meal fillers, snacks or post workout meals and supply the best nutrients.

Benefits of meal replacement over whole food

  • Takes the guess work out of eating right
  • Convenient
  • Can use 'on the go'
  • Provides optimal amounts of nutrients
  • Stops you reaching for high sugar/fat snacks
  • Easy to use
  • Perfect when you don't have time to prepare, cook and eat a meal
  • Know exactly what you eating

Studies have shown that 5-6 smaller meals throughout the day are better than traditional 3 square meals. Smaller meals:

  • Increase metabolic rate
  • Stabilize blood sugar levels
  • Enhance nutrient absorption

Effects of Meal Replacements on performance

Meal replacements used with training are a convenient, effective way to help you build your best body. Meal replacements alone will not result in achieving this but can assist in reaching different goals, from weight loss to muscle building. There are several varieties of MRPs that can assist with your different goals, such as:

  • Long term weight loss1,3
  • Improved resting metabolic rate2
  • Preserving lean body mass on resistance weight loss programs2
  • Boost energy levels
  • Support muscle growth
  • Improve recovery after exercise

Meal replacements should help you reach your goals if you are:

  • Physically active
  • Eating 5-6 meals a day
  • On a weight loss program
  • Resistance training
  • Looking for a post workout recovery drink
  • Strength and power training

How Meal Replacements improve performance

Protein repairs the muscles after exercise to improve recovery and provides an anabolic environment for muscle growth

Meal replacements contain a blend of protein, carbohydrate, vitamins and minerals and are usually low in fat. The nutrients in meal replacements aid performance in the following way:

Protein repairs the muscles after exercise to improve recovery and provides an anabolic environment for muscle growth when consumed in the correct amounts. Carbohydrates supply energy during exercise and refuels your muscles after exercise. Vitamins and minerals support optimal health and wellbeing.

Some meal replacements contain added ingredients, such as creatine. These provide a further stimulus that improves performance by their individual mechanisms.

How to use Meal Replacements

Meal replacements are designed to replace a meal, provide a snack 'on the go', or post workout recovery. MRP's should be used with whole food meals to provide a balanced nutritional diet. The amount you have depends on your training goals, what you eat during the day etc.

Meal replacements can be used alone, after training, or more frequently if you are trying to build muscle mass. We recommend no more than 2-3 a day in between 3 whole food meals.

Types of Meal Replacements

Meal replacements come in 3 main forms:

  • Powders
  • Nutrition bars
  • Ready-to-drink

They follow the same principle but simply offer alternate ways to use them, each with small advantages and disadvantages.

Meal Replacement Powders

MRP powders mix with milk or water in a shaker or blender to produce a shake. Meal replacement powders are generally cheaper, have the best nutritional profile and are lower in fat than bars and RTD's. The downside is you do have to mix the shake up.

The average values found in SNC's range of MRP powders per serving

Weight Loss
Price per serving - £1.36
Energy / Calories - 177 kcal
Protein -
27g
Carbohydrate -
14g
Fat -
2.4g
Optimum Nutrition
Price per serving - £1.86
Energy / Calories - 281 kcal
Protein -
40g
Carbohydrate -
23g
Fat -
4.5g
Muscle Building
Price per serving - £1.96
Energy / Calories - 310 kcal
Protein -
43g
Carbohydrate -
17g
Fat -
4g

Meal Replacement Bars

Meal replacement bars were designed for convenience. They can be used 'on the go', taken to the gym or kept in your drawer. Bars are ideal when you need a nutritious, tasty snack that stops you reaching for high sugar, high fat foods. MRP bars are higher in fat and have added ingredients over the powders and ready-to-drinks, such as glycerine.

Meal Replacement Ready to Drinks

Meal replacement ready to drinks are pre mixed nutrition shakes. They come in handy throw away cartons, perfect when you're out and about. They are similar to the MRP powders but tend to be less filling due to smaller volumes and less protein. Ready-to-drinks are a low fat alternative to meal replacement bars.

  Powders Bars Read-to-Drink
Price/serving £0.93 £1.66 £1.44
Protein per serving 39g 32g 20g
Carbohydrate per serving 20g 34g 20g
Fat per serving 5g 11g 4g

Table 1: Average values of meal replacements that we sell

Meal Replacement by goal

Meal replacements cater for a variety of goals from weight loss to muscle building. Meal replacement powders, bars and ready-to-drinks can be divided into 3 categories:

MRP's for muscle building are similar to those for optimum nutrition but contain added ingredients to promote muscle growth

  • Weight loss
  • Optimum nutrition
  • Muscle building

Meal Replacements for Weight Loss

Meal replacements designed for weight loss contain fewer calories and carbohydrates per serving, compared to the rest. Recommended daily protein intake increases on a fat loss diet6. The protein aids to satisfy hunger and prevent lean muscle loss5.

Meal Replacements for optimum nutrition

MRP's for optimum nutrition are based on high protein content with equal to slightly less carbohydrate content. Typically they contain between 230-360 kcal, 30-45g protein, 11-35g carbohydrates. Vitamins, minerals and glutamine are generally added for wellbeing and muscle recovery.

Meal Replacements for muscle building

MRP's for muscle building are similar to those for optimum nutrition but contain added ingredients to promote muscle growth. Typically they contain between 290-348kcal, 32-53g protein, 11-28g carbohydrates. Added ingredients include:

  • Creatine
  • Branched chain amino acids (BCAA's)
  • Colostrum
  • Glutamine
  • Medium chain triglycerides (MCT)
  • Conjugated linoleic acid (CLA)
  • Essential fatty acids (EFA's)

Potential adverse effects of Meal Replacements

Those allergic to lactose should look for lactose free MRP's or, if sensitive to dairy products, should look for a soy based formulation. Finally, try to avoid MRPs that use an aspartame sweetener as it can lead to gastrointestinal stress and stomach upsets.

Meal Replacements FAQ

What is the difference between a protein powder and MRP?

Most protein powders are made with a single source protein, such as whey. Meal replacements offer more and can include a variety of protein sources as well carbohydrates, vitamins, minerals and fats, hence the term 'meal replacement'.

Are meal replacements better than whole food?

MRP's are not necessarily better than whole foods but provide an excellent alternative. Whole foods should always form the base of your daily diet however it's often difficult to cook and prepare 5-6 meals per day. Fruit and vegetables provide nutrients such as phytochemicals and fiber that is not a component of MRP's, although are included in some.

It is also possible that over-use of liquid meal replacements may not stress the digestive system adequately. This may lead to a down-regulation of digestive enzymes. SNC recommend you have a maximum of 2-3 meal replacements in between whole food meals.

Should I use water or milk to make up my MRP?

If your goal is to increase your total caloric intake, i.e. weight gain, then milk or water should be used, however if your goal is simply to increase consumption of quality proteins whilst decreasing calories, then adding water is just as appropriate.

Who should read this article?

Anyone involved in regular physical exercise to build muscle, lose weight or improve recovery and need ultimate convenience in your nutritional plan.

Meal Replacement products are used by:

  • Weight lifters
  • Bodybuilders
  • Exercise enthusiasts
  • People on weight loss program
  • Sportsmen

Meal replacements used with training can assist in reaching different goals, from weight loss to muscle building1

SNC Price £31.99
Learn More

Muscle Milk Sachets
from CytoSport

An "evolutionary" muscle formula to promote efficient fat burning, lean muscle growth and fast recovery from exercise.

Whey Gold MRP
from Optimum Nutrition

A quick, convenient, and delicious meal providing premium proteins, quality carbohydrates, dietary fiber, vitamins, and essential minerals.

Pro Mr
from Chemical Nutrition

More than a standard, high protein meal replacement. Pro.MR is a comprehensive nutritional strategy for all high intensity training athletes.

The references are not here to confuse you. They simply show you the research papers that have been used in our 'eXpert Buyers Guides' to make sure you get the right information.

1. Brown, MR., Klish, WJ., Hollander, J., Campbell, M., Forbes, GB (1983) A high protein, low calorie liquid diet in the treatment of very obese adolescents: Long term effect on lean body mass. The American Journal of Clinical Nutrition 38:20-31

2. Bryner, RW., Ullrich, IH., Sauers, J., Donley, D., Hornsby, G., Kolar, M., and Yeater, R (1999) Effects of resistance vs aerobic training combined with an 800 calorie liquid diet on lean body mass and resting metabolic rate. Journal of the American College of Nutrition. 18(1):115-121

3. Rothacker, DQ (2000) Five-year self management of weight using meal replacements: Comparison with matched controls in rural Wisconsin. Nutrition 16:344-348

4. Maughan, RJ., King, DS., and Lea, T (2004) Dietary supplements. Journal of Sport Sciences. 22: 95-113

5. Tipton, KD., and Wolfe (2004) Protein and amino acids for athletes. Journal of Sport Science. 22:65-79

6. Bean, A (2006) The complete guide to sports nutrition. 5th Edition. A&C Black. London

Disclaimer

All content within SNCDirect.com is provided for general information only, and should not be treated as a substitute for the medical advice of your own doctor or any other health care professional.

The Sports Nutrition Company Ltd is not responsible or liable for any diagnosis made by a user based on the content of the SNCDirect.com website.

The Sports Nutrition Company Ltd is not liable for the contents of any external internet sites listed.

Always consult your own GP if you're in any way concerned about your health.