Optimum Nutrition Pro Complex Gainer Review

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SupplementServingsCost Per ServingRatingPrice
ON Pro Complex Gainer
14$2.684.5/ 5$$$

What Is Optimum Nutrition Pro Complex Gainer?

Optimum Nutrition Pro Complex Gainer is an augmented weight gainer system. It has seven sources of protein, complex carbohydrates, healthy fat from medium chain triglycerides (MCT), dietary fiber, digestive enzymes, vitamins, and essential minerals. Will take a closer look below.

What’s In Optimum Nutrition Pro Complex Gainer?

pro complex gainer facts

Pro Complex is based on a 1 scoop serving, which will give you just 8 grams of fat, 360 mg of sodium, 85 grams of carbohydrate and a huge 60 grams of protein. Pro Complex gainer: Quality mass through premium proteins and nutrient-dense calories.

The protein source is a blend of whey protein isolate, hydrolyzed whey protein isolate, egg protein, and Leucine peptides. Other ingredients include cocoa, lecithin, natural and artificial colors and flavors.

The product also contains a digestive enzyme blend, which is a blend of beetroot fiber, amylase, protease, cellulase, lactase, and lipase. This is designed to help the body digest the extra protein in this product.

Who Could Benefit From Optimum Nutrition Pro Complex Gainer?

The guy or girl who struggling to add lean athletic muscle. To gain 1 pound of lean mass, you need to consume an extra 3,500 calories. That is a lot of extra food, by using a weight gainer, it will make it easier for you to consume more calories and reach your goals.

When To Take Optimum Nutrition Pro Complex Gainer

Pro Complex can be taken any time of day. It makes a great meal replacement shake or post workout shake with the extra calories, protein, and carbohydrates.


  • Massive amount of protein (60 grams) per serving
  • Massive amount of carbohydrates (85 grams) per serving
  • Ultimate LEAN GAINER Formula
  • 650 Calories
  • Only 5 grams of sugar
  • 7 Superior Proteins Including Whey, Casein, and Egg
  • Mixes Effortlessly with a Blender, Shaker, or Spoon


  • Some may experience stomach upsets or bloating