Pro Complex Gainer by Optimum Nutrition

Pro Complex Gainer by Optimum Nutrition Zoom

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Pro Complex Gainer by Optimum Nutrition


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Special Price From: $139.95

RRP: $159.95

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Optimum Nutrition
  • Need help?

    Call 1300 837 785
    or Email us
  • Free shipping or Gift

    on orders over $150
  • 30 Day Guarantee

    Don't Like it for any reason?
    Let us know.
  • Over 60 Stores

    Australia Wide
  • Best Price Guarantee

    Found a better price? We'll beat it! More Info

Same Day Dispatch

Order in the next
& we'll send it today!

Product Description


  • High protein-to-carb ratio
  • Ultimate lean gain formula
  • 650 calories
  • Low sugars

Optimum Nutrition Pro Complex Gainer

A unique supplement for gaining lean muscle mass, Pro Complex Gainer is what you are looking for as it contains 60 grams of pure protein, made from different protein sources. Unlike other weight-gainer formulation, Pro Complex Gainer doesn’t contain simple sugars and fat. Other content that supplies you are complex carbs, digestive enzymes, medium chain triglycerides (MCTs), vitamins, minerals with the best taste you’ll surely enjoy! This product is made with quality, not just quantity because the people behind this outstanding supplement understand your needs.

This product comprises of pure whey protein that is easily digested and absorb by the body. Made of high quality amino acids that supports muscle recovery. Carbohydrates and healthy fats are also the main content of this product that provides energy to prevent proteins from being burned as fuel. A total of 85 grams carbs with 5 grams fiber and only 5 grams of sugar. There are important micronutrients that is needed for growth is also important component of Pro Complex Gainer because without this nutrients, the body cannot process precisely all the proteins, carbohydrates and fats.

About calories, Pro Complex Gainer provides 600 calories per serving, enough to sustain your gains because what you need should compose of 3500 calories or more than you normally consume from foods, drinks and other supplements. 

Ingredients benefits

Whey protein isolate - it is the purest form of whey protein as it has 90 percent of protein in it and with a little to no fat content. It is needed for muscle repair and energy production.

Whey protein concentrate - a medium digesting and absorption protein that develops from milk. Its highly bioactive and has an extreme muscle amino acid content plus immune and health enhancing properties such as lactoglobulin, lactoalbumin, Immunoglobulins, Bovine serum, glycomacropeptides, albumin. lactoferrin, lactoperoxidase and some important growth factors.

Calcium caseinate - is also a very slow absorbing and gradually digesting protein that is used for faster metabolism.

Egg albumen – this is the white of an egg, very rich in protein and amino acids like arginine, isoleucine, histidine, leucine, methionine, lysine, threonine, phenylalanine, tryptophan, and valine. Known to be the best choice for bodybuilders. 

Hydrolyzed whey peptides – a different kind of whey that has been processed enzymatically that break down the protein’s long chain of amino acid known as poly peptides.

Glutamine peptides – these are bonded to other amino acids to increase the stability of glutamine in the body. Its role is to improve muscle and soft tissue repair after an exercise, injury or even surgery.

Medium chain triglycerides -are more rapidly absorbed by the body and more quickly metabolized as fuel in the body; found naturally in coconut oil and palm kernel oil; help promote weight loss by increasing energy expenditure; improved sports performance

Chromium polycotinate – it is a mineral that is needed in fat, carbs and protein metabolism; it is also needed in insulin production with the fact that it stabilizes your blood sugar levels.

Lactase – another kind of sweetener that do not contain high calories; easier to digest



Add 1 scoop 165g Spoon of Pro Complex Gainer to a glass filled with 500ml or more water to suit. Mixed well for completely dissolved. 

Can be used as a meals: Drink 1-2 servings of Pro Complex Gainer between meals to maintain nitrogen balance and support of a high calorie diet. For post workout: Start with one serving of Pro Complex Gainer, 30-60 minutes after exercise to support in maximum recovery. Before bedtime: Drink 1 serving of Pro Complex Gainer, 45- 60 minutes before going to bed and provide nutrients for muscle recovery the whole night. 



5.08 Lbs. Double Chocolate
Supplement Facts
Serving Size1 HeapingScoop(165g)
Servings Per Container14
Amount Per Serving
Calories 650
Calories From Fat 70
% Daily Value*
Total Fat 8g 12%
Saturated Fat 4g 20%
Trans Fat 0g
Cholesterol 60mg 20%
Sodium 340mg 14%
Total Carbohydrate 85g 28%
Dietary Fiber 5g 20%
Sugars 6g
Protein 60g
Vitamin A 20%
Vitamin C 35%
Calcium 50%
Iron 25%
Vitamin E 35%
Thiamin 15%
Riboflavin 35%
Niacin 20%
Vitamin B6 20%
Folic Acid 20%
Vitamin B12 20%
Biotin 20%
Pantothenic Acid 20%
Phosphorus 35%
Iodine 45%
Magnesium 30%
Zinc 20%
Selenium 10%
Copper 20%
Manganese 35%
Chromium 30%
Molybdenum 25%
Chloride 4%
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs:
Maltodextrin, Protein Blend (Whey Protein Isolate, Whey Protein Concentrate, Calcium Caseinate, Egg Albumin, Hydrolyzed Whey Peptides, Glutamine Peptides), Cocoa (Processed With Alkali), Lipid Blend (Medium Chain Triglycerides, High Oleic Sunflower Oil), Partially Hydrogenated Guar Gum, Natural And Artificial Flavors, Lecithin, Vitamin/Mineral Blend (DiMagnesium Phosphate, Calcium Carbonate, Tricalcium Phosphate, Maltodextrin, Ascorbic Acid, Ferric Orthophosphate, Molybdenum AA Chelate, D-Alpha Tocopheryl Acetate, Boron Proteinate, Niacinamide, Zinc Oxide, Manganese Sulfate, D-Calcium Pantothenate, Selenomethionine, Pyridoxine Hydrochloride, Vitamin A Palmitate, Cupric Oxide, Chromium Polynicotinate, Thiamin Hydrochloride, Riboflavin, Beta Carotene, Folic Acid, Biotin, Potassium Iodide, Cyanocobalamin), Salt, Carbogen®, Aminogen®, Sucralose, Acesulfame Potassium, Lactase.
Allergen Information: Contains Milk, Egg, Soy (Lecithin), And Wheat (Glutamine Peptides) Ingredients.

Shipping & Returns

Below is general information about Nutrition Warehouse's delivery policy. Your final delivery cost will be calculated in the checkout for your order.

How Much Does Delivery Cost?

If your order totals over $150, then you have the option of either Free Shipping or a Free Gift!

Delivery of orders under $150 is a flat rate of $9.95 anywhere in Australia.

When Will You Receive Your Order?

If you order is placed before 3pm (AEST) Mon-Fri - not including Public Holidays - then we will dispatch it the same day.

Most customers receive their supplements in 1-2 business days! As long as:

  • You order before 3pm (AEST) Mon-Fri
  • You use a payment method with instant clearance, like Paypal Instant Payment or Credit Card
  • Your parcel is less than 5kg in cubic weight. (Some bulky goods will not apply)
  • You are not in a remote location

Please note parcels going via Australia Post (PoBox, Defence Adresses) may take longer than 1-3 business days.

Parcels going to NT, and bulky parcels going to WA may take 5+ business days to arrive.

If your order weighs more than 5kg or is bulky: Heavy or bulky orders are sent via road freight which means that the estimated delivery time will be longer than orders sent via air freight.

If you have used an alternate payment method: Direct bank deposit or Paypal Echeque may take some time to clear. To get your supplements in the shortest time possible, use Paypal's Instant Payment or a credit card.

What's Our Return Policy?

Here at Nutrition Warehouse we Live to make sure you are completely satisfied with your products and experience.

30 Day Flavour & Performance "5 Scoop Guarantee"

Don't like the taste or performance of your new product for any reason, then simply return your opened product with 5 scoops or less used to any store or our online warehouse and we will happily exchange or apply a store credit within 30 days of purchase. Don't forget to bring in your receipt or rewards card.

60 Day Product Guarantee

If you change your mind or simply aren't happy for any reason, you can simply return your unopened product to any store or our online warehouse for a full refund within 60 days of purchase.  Don't forget to bring in your receipt or rewards card.

Still have questions?

Please call our amazing Customer Service team on 1 300 837 785. We're available Mon - Fri from 9.00am-5.00pm AEST.

How to request a return:

If a product you receive is damaged during shipment, arrives after its expiration date, or is not what you ordered, we can send a replacement right away and provide a prepaid return label & postage bag free of charge.

To begin processing any type of return, please contact our Amazing Customer Service team on 1 300 837 785 and provide your name, the order number, and the reason for returning the product.

    If you change your mind or simply aren't happy, you can simply return your unopened product for a full refund within 60 days of purchase!
    Don't like the taste or performance? Simply return your product with 5 scoops or less used and we’ll exchange or apply a store credit within 30 days!
    Here at Nutrition Warehouse we love to make sure you are completely satisfied with your purchase. If it’s our fault, then the returns are on us!

Optimum Nutrition
  • Need help?

    Call 1300 837 785
    or Email us
  • Free shipping or Gift

    on orders over $150
  • 30 Day Guarantee

    Don't Like it for any reason?
    Let us know.
  • Over 60 Stores

    Australia Wide
  • Best Price Guarantee

    Found a better price? We'll beat it! More Info
Excellent Review by thomas
Mixes well, tastes good. Serving size is huge and if you stuck the the recommended serving you would run out very quickly. (Posted on 17/07/2019)
Best mass gainer Review by Justin
Good clean carb source high protein, low sugar, not overly large serving size - can’t beat it. (Posted on 25/06/2019)
no bloatingReview by Anton
I was 64kg and am 6'2, I used this and am now very lean and 74kg with much more muscle, the flavours are amazing it was hard to not want to drink it just as a desert, did not have any bloating from this despite the calories and full cream milk, amazing mass gainer. (Posted on 28/04/2019)

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