MET-Rx Size Up (2721g)

Click here for extra 7% discount on best quality supplements


Buy 1
Save £36.04
Buy 4+
2% extra discount
£35.23 each

This product is available in variety of options

Please make your selection below then click 'Add to Shopping Cart'

MET-Rx Size Up (2721g)

If you are one of those people who have a tough time packing on solid, powerful muscle, try MET-Rx Size Up, specially designed for those who want to gain weight and pack on quality mass. MET-Rx Size Up contains many key ingredients to help keep you growing when other weight gainers quit. MET-Rx specially selected nutrients are designed to meet your body's needs for both immediate and sustained energy and protein synthesis.

MET-Rx Size Up contains the trusted clinically developed Metamyosyn protein with additional muscle mass nutrients including extra whey protein, creatine, glutamine and naturally occurring, high quality branched chain amino acids (BCAA's) to provide sustained. Highly bio-availbale fuel for your body's protein needs. MET-Rx Size Up ultises complete proteins from the finest sources to ensure every amino acid required by your muscles is supplied.

MET-Rx Size Up contains high fibre and top quality complex carbohydrates to intensify the time release effects of the Metamyosyn protein and muscle mass nutrients and to keep your muscles pumped with anabolic nutrients for a longer period. MET-Rx Size Up is formulated with no fructose, so you won't experience the dreaded crash that comes from consuming sugar laden formulas. Keep both your muscles and your mind energised with complex carbs so you can keep training and growing.

MET-Rx Size Up contains just the right amount of dietary fats essential for staying lean without packing on unwanted boy fat. Size Up contains both quick digesting MCT's (medium chain triglycerides) and slower digesting flaxseed which allows for increased availability over an extended time period. Best of all, there are no unhealthy trans-fat in our formula. MET-Rx Size Up is packed with a rich source of specially selected vitamins and minerals essential to carbohydrate, protein and fat metabolism.

Optimal intake of key vitamins and minerals is especially important when following a high calorie diet for mass gains, in order to assure proper usage and muscle metabolism of ingested calories. You can rest assured that the comprehensive blend of vitamins and minerals in Size Up will complement your nutrition plan to help support your 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 Size Up makes it easy to get the high quality protein, complex carbs and essential nutrients that are important for a serious, intensive training program.

Dolphin price:
1-3 Days
Currently out of stock
    MET-Rx Size Up (2721g)


    • No Fructose or Aspartame
    • Easy to mix
    • One serving a day formula
    • 54 g Protein

    Serving Information

    • Container Size: 2.721 g
    • Serving Size: 3 Scoops (167 g)
    • Servings Per Container: 16

    Nutritional Information Per 167g Serving (Based on Strawberry Flavour)

    • Energy: 2652 kJ / 633 kcal
    • Protein: 54 g
    • Total Carbohydrates: 91 g
      • of which Sugars: 3 g
    • Fat: 6 g
      • of which Saturates: 3 g
    • Fibre: 3 g
    • Sodium: 0 g

    Amino Acid Profile per 167g Serving

    • L-Alanine: 2.2 g
    • L-Arginine: 2.4 g
    • L-Aspartate: 4.6 g
    • L-Cysteine: 0.9 g
    • L-Glutamate: 13 g
    • L-Glycine: 1.7 g
    • L-Histidine: 1.1 g
    • L-Isoleucine: 2.6 g
    • L-Leucine: 4.7 g
    • L-Lysine: 3.1 g
    • L-Methione: 0.9 g
    • L-Phenylalanine: 2.5 g
    • L-Proline: 3.2 g
    • L-Serine: 2.7 g
    • L-Threonine: 2.9 g
    • L-Tyrosine: 1.9 g
    • L-Trytophan: 0.7 g
    • L-Valine: 2.7 g


    • Strawberry:
      • Carbohydrate Blend (Maltodextrin, Oat Powder), Protein blend (Whey protein concentrate, Milk protein concentrate, Calcium caseinate), Glutamine Peptides, Soya Isolate, Creatine Monohydrate, Tricalcium phosphate, Colour (Beetroot Red), Flavouring (Dipotassium phosphate, Magnesium Sulphate, Tri magnesium phosphate), Stabiliser (Xantham Gum), Vitamin & Minerals Premix, Ascorbic Acid, Vitamin E, Nicotinamide Vitamin D3, Ferrous Fumerate, Zinc Sulphate Monohydrate, Vitamin A Acetate, D-Pantothenic Acid, Maltodexrtin, Vitamin B12, Vitamin D3, Riboflavin 5 Phosphate, Pyridoxine HCL, Vitamin B1 mono-nitrate, Folic Acid, Biotin, Potassium Iodide, Potassium Chloride, Sweetener (sucralose)

    Recommended Use

    • Adults blend three scoops (167 g) with 400 ml of water or milk and mix thoroughly.
    • For best results, once mixed consume within 20 minutes.
    • Consume one serving daily.

    MET-Rx Size Up review


    MetRx size up

    Review posted on 12 May 2016

    Tastes great, easy to mix and really works!!

    Overall rating:
    Help other customers find the most helpful reviews
    Was this review helpful to you?
    Review posted on 25 Apr 2013

    Fantastic, this protein adds leans muscle. I have used now for 2 weeks and have noticed increase in muscle size and weight. The weight i have gained is lean muscle and not fat. This Protein Tastes great and is a very thick shake when mixed. Love this product and will be reordering.

    Overall rating:
    Help other customers find the most helpful reviews
    Was this review helpful to you?

    Very good

    Review posted on 27 Dec 2011

    Great taste perfect for breakfast after a good late afternoon workout..

    Overall rating:
    Help other customers find the most helpful reviews
    Was this review helpful to you?

    Gets results

    Review posted on 23 Nov 2011

    If you struggle to gain weight, or can't eat enough calories this product is excellent. I am naturally skinny but put on 1/2 stone in the first two months, and have now put on 3/4 stone over six months. I'm not a big fan of the flavours, they take some getting used to, I would particularly avoid the vanilla. Even with this I would still give this 5 stars because it works better than any other product I have used.

    Overall rating:
    Help other customers find the most helpful reviews
    Was this review helpful to you?

    Great Product

    Review posted on 14 Nov 2011

    I have tried a number of products over the years, including those from ProLab, MuscleTech and Maximuscle to name a few, and I find this product by far the best all round nutritional supplement to support my training. It has a very good balance of calories, carbs and protein to help fuel your training sessions and promote growth.

    This is also the first product I actually look forward to taking as it tastes great (chocolate), and it mixes really well with water using a decent shaker. I tend to use 2 scoops per 500ml of ice cold water, as if you go by the manufactures recommendation it’s a bit too thick and you will need a spoon to eat it. I’m what is classed as a ‘hard gainer’, so I needed a single product that was high in calories, carbs and protein and this product has really helped me pack on some quality size. I have not put on any fat at all with this product, only good solid muscle. If you’re looking for a great all rounder to pack on some size then look no further.

    Help other customers find the most helpful reviews
    Was this review helpful to you?
    Review posted on 13 Sep 2011

    Fast delivery, excellent customer service, got it right first time and spot on prices.

    Overall rating:
    Help other customers find the most helpful reviews
    Was this review helpful to you?

    Good Stuff

    Review posted on 27 Jun 2011

    Had this stuff twice now,it is good, but I had to use only 3 scups instead of the normal 4, this is because you cant fit it in the shaker,

    But still thinking's up nicely and tastes good, both banana and choc are nice and mix really well, and as long as your are eating a good meal you will put on the weight, I used this as a breakfast meal if I am in a hurry in the morning. the only thing I don't like is the price, and that the product does not last long, with 3 to 4 scups it does go quick.

    Help other customers find the most helpful reviews
    Was this review helpful to you?
    API Gainer Xtreme (16 Servings)
    • In Stock, Next Day Delivery
    more info
    Gaspari Real Mass Advanced (5.4 kg)
    • In Stock, Next Day Delivery
    more info
    Nutrabolics Mass Fusion (7.2 kg)
    • In Stock, Next Day Delivery
    more info
    Your shopping basket
    is currently empty
    Select your currency:
    Select your language:
    Dedicated BCAA Sensation (30 Servings)
    Price: £ 21.95
    Normally: £ 28.99
    Reflex BCAA (500 Capsules)
    Price: £ 20.49
    Normally: £ 44.99
    Floradix Floravital (500 ml)
    Price: £ 11.75
    Normally: £ 18.84
    Vega Protein Smoothie (260g)
    Price: £ 17.95
    Normally: £ 23.49
    Vega Essentials Nutritional Powder (17 Servings)
    Price: £ 29.95
    Normally: £ 38.99
    Optimum NutritionReflexKineticaUSNMaxiNutritionDymatizeMuscleTechGrenadeWeider NutritionScitec NutritionGaspariMusclePharmBoditronicsMutantAnimalMET-RxBSNEASPhD NutritionCNPSyntraxSolgarSci-MXNutriSportiSatoriDedicated NutritionNutrexUniversal NutritionAll American EFXBPI SportsProlabControlled LabsCytosportApplied NutritionBeastLabradaMRI PerformanceTop Secret NutritionPeak BodyAllMax NutritionAtlasPharma FreakBio-SynergyExtreme NutritionArnold Schwarzenegger SeriesMHPEfectivCellucorVPX