Dietary Supplement
Lean Mass & Strength*
One of the Highest Protein Contents per Serving on the Market
- Vanilla ~ Naturally & Artificially Flavored
- 60g Protein^
- 600 Calories^
- 3g Creatine^
- 3g Glutamine^
- 79g Energizing Carbs^
MET-Rx® Xtreme Size Up®
MET-Rx Xtreme Size Up has one of the highest protein contents per serving on the market. Providing 60g of protein and 600 calories per 4 scoop serving^, Xtreme Size Up should be your choice for serious mass gaining!*
If you are one of those people who have a tough time packing on solid, powerful mass, try MET-Rx Xtreme Size Up, specially designed for hard gainers who want to gain weight and pack on mass.* MET-Rx Xtreme Size Up features 4 optimizer blends to help you keep growing!* Our specially selected nutrients are designed to meet your body's needs for both immediate and sustained energy and protein synthesis.*
The Secret is the Source of Protein!
Metamyosyn® Muscle Mass Optimizer Blend combines the trusted Metamyosyn protein blend, with extra Whey Protein and Creatine, to provide sustained, highly bioavailable fuel for your body's protein needs.*
A combination of fast and slow proteins results in a more prolonged absorption rate allowing extended muscle-amino delivery.* By extending the delivery of all essential amino acids to your muscles, MET-Rx Xtreme Size Up helps to stop you from going into a catabolic state which can otherwise lead to muscle loss.*
MET-Rx Metamyosyn Muscle Mass Optimizer Blend utilizes complete proteins from the finest sources to ensure every amino acid required by your muscles is supplied.*
Energizing Carb Optimizer Blend contains high fiber and glycogen-building carbs that work hand-in-hand with the Muscle Mass Optimizer Blend.* This specialized blend contains over 70g of carbs per serving to keep your muscles fully loaded with this important macronutrient.*
MET-Rx Xtreme Size Up is formulated with no fructose, so you won't experience the dreaded crash and burn that comes from consuming sugar-laden formulas. Keep your mind energized with carbs so you can keep training and growing!*
Lean Lipid Optimizer Blend contains just the right amount of dietary fats per serving. We know that your goal in your workout is to pack inches onto your biceps rather than your waist, so we didn't compromise quality with loads of unhealthy fats that could slow down your progress.
MET-Rx Xtreme Size Up contains both quick digesting MCTs and slower digesting flaxseed and sunflower fats, which allows for energy availability over an extended time period.*
MultiVitamin Optimizer Blend is packed with specially selected vitamins and minerals essential to carbohydrate and protein metabolism.* Optimal intake of key vitamins and minerals is especially important when following a high-calorie diet and exercise program for mass gains, in order to assume proper usage and muscle metabolism of ingested calories.* You can rest assured that our comprehensive blend of the right vitamins and minerals will complement your nutrition plan to support your bodybuilding goals and optimal health.*
In order to make serious gains, you need to train hard, get lots of rest, and take in plenty of key nutrients. MET-Rx Xtreme Size Up makes it easy to get the high quality protein, energizing carbs and essential nutrients that are important to a serious, intensive training program.*
Typical Amino Acid Profile (Milligrams per 167g Serving†)
Essential Amino Acids | Nonessential Amino Acids |
Histidine | 1366 mg | Alanine | 2007 mg |
Isoleucine | 2819 mg | Arginine | 1679 mg |
Leucine | 5154 mg | Aspartic Acid | 4409 mg |
Lysine | 4363 mg | Cysteine | 678 mg |
Methionine | 1333 mg | Glutamic Acid | 9259 mg |
Phenylalanine | 2286 mg | Glycine | 970 mg |
Threonine | 2687 mg | Proline | 4360 mg |
Tryptophan†† | 693 mg | Serine | 2730 mg |
Valine | 3193 mg | Tyrosine | 2350 mg |
MET-Rx®
Shaping Every Body.™
Contents are sold by weight. Some settling may occur.
1-800-55-MET-Rx
Manufactured in the USA
^Per 4 Scoop Serving
†Approximate Values
††L-Tryptophan is naturally occurring, not added.
*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.
Post-Workout: For maximum results, take 4 scoops with 16 oz water immediately following your workout. For adults, add 4 scoops (600 calories) (167g) to 16 oz of cold water and mix thoroughly in a blender or shaker. For increased calories, use 16 oz of skim milk (772 total calories) or 2% milk (844 total calories) instead of water. Increase or decrease the amount of liquid to achieve desired consistency. Drink immediately for best results. As a reminder, discuss the supplements and medications you take with your health care providers. Store at room temperature and avoid excessive heat. Use in conjunction with an intense daily exercise program and a balanced diet including an adequate caloric intake.
©2013 MET-Rx Nutrition, Inc
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