Optimum Nutrition Serious Mass Review

Review of: Optimum Nutrition Serious Mass

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Comprehensive review of Optimum Nutrition Serious Mass. See what real experts and actual users have to say about this protein powder.

Optimum Nutrition Serious Mass ReviewProduct Name:  Optimum Nutrition Serious Mass

Overall Rating:   Protein Powder Rating 4/5

Type:  Powder

Protein Source:  Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey

Protein Per Serving:  50 grams

Price:  $27.99

Size:  6 lbs

Serving Size:  2 heaping scoops

Servings Included:  8

Cost Per Gram of Protein:  6.99 cents

Moneyback Guarantee:  No

Where To Buy:  Click Here

Top 10 Ingredients:  Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey), Cocoa (processed with alkali), Natural and Artificial Flavors, Vitamin and Mineral Blend, Medium Chain Triglycerides, Creamer (Sunflower oil, maltodextrin, modified food starch, dipotassium phosphate, tricalcium phosphate, tocopherols), Lecithin, Sucralose, and Acesulfame Potassium

Overall Opinion:

I give Optimum Nutrition Serious Mass 4 out of 5 stars because I really like it as an option for those looking to gain weight.

This supplement is a high calorie and high protein weight gain powder, so it’s definitely not intended for everyone.

But I think it’s a great product for those looking to bulk up.

It makes getting in the extra protein and calories needs much easier than adding in even more meals to reach your individual daily caloric goals.

In every serving (which is 2 heaping scoops), it has 50g of protein, 249g carbohydrates, 7g of fat, and 1270 calories.

This is a great set of macros for those looking to bulk up.

You can even use milk instead of water and up those numbers even more along with adding in additional calories such as peanut butter, coconut, flaxseed oil, honey, oat bran, chocolate chips, peanuts, or a banana.

There are a few different suggestions of when to take it.

You can drink ½ – 1 servings of Serious Mass between meals, post-workout, and/or before bed.

This may help with muscle recovery and help support a high-calorie diet needed to gain weight.

It also has 25 vitamins and minerals added, along with Creatine Monohydrate (1g), L-Glutamine (500mg), Glutamine Peptides (500mg), Choline (250mg), Inositol (250mg), and PABA (5mg).

It uses a blend of proteins, including: Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey.

Having a variety of protein sources allows for various amino acid profiles and a more steady, consistent flow of aminos since each protein has different digestion rates.

A few things to keep in mind with this particular weight gainer are that it’s not allergy friendly and you may potentially see some side effects.

This powder contains milk, wheat, soy, and egg, so steer clear if you’re sensitive to any of these.

Also, you may see side effects such as bloating or stomach pain and especially if you’re not used to consuming this many calories at one time.

New users are suggested to start off with ½ a serving daily and continue for 1 week.

After a week, gradually increase to 1 or more full servings throughout the day.

You’re going to get very full off 1 serving, so it’s important that you continue to eat as you normally would throughout the day (especially if you’re following a specific plan or set numbers).

In order to gain weight, you need to eat.

Think of this protein powder as a supplement to your already increased calorie/protein diet.

Overall, I think it’s a great product and may really help those looking to bulk up and gain weight.

Detailed Opinion:

Ease of Use

One of the biggest downsides to this protein powder is that it’s a total hassle to make.

Every time I used it, it ended up in a big mess.

The scoops are massive and for some reason the opening of the container is about the same size as the scoop so it’s really hard to get the scoop out without getting powder all over the place.

Don’t even attempt to use a spoon or even a shaker because the weight gainer is SO thick.

This supplement pretty much requires the use of a blender, which to me is a total pain in the butt having to lug it out and clean it every day.

So what you’re going to do is take 2 heaping scoops of powder and combine with 24 ounces of water (or whichever beverage of your choice).

Blend for 45-60 seconds.

Then you can add a few ice cubes or any extra ingredients to add calories such as peanut butter, banana, almonds, or granola.

Blend for another 30-45 seconds.

It will come out super thick, especially if you added extra ingredients or used some type of milk.


I tried to protein weight gain powder in the Chocolate Peanut Butter flavor.

I definitely like the taste.

It’s rich and sweet but not overpowering.

If you like chocolate and/or peanut butter, I think you’ll like this flavor.

It tastes good with just water but adding milk or almond milk enhances the taste but makes it even thicker.

They also have it in chocolate, vanilla, and strawberry flavors.

Macro Analysis

The macro analysis for Serious Mass is 50 grams of protein, 7 grams of fat, and 249 grams of carbs.

This amount is per serving, which is 2 heaping scoops (334 g).

These scoops are definitely much larger than average!

It has a whopping 1270 calories per serving.

The macros for Serious Mass go perfectly in line for those really looking to gain weight and add mass.

Ingredient Drilldown

There’s a ton going on in the ingredients of Serious Mass.

The first ingredient is maltodextrin.

Maltodextrin is a polysaccharide and is in almost every single weight gainer.

It has a high glycemic index of 85 to 105 and causes insulin levels to spike dramatically.

This ingredient is used as the primary source of carbohydrates.

Companies use maltodextrin because it’s cheap, tasteless, and they can list it as a non-sugar carbohydrate.

Next up is the protein blend of Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, and Sweet Dairy Whey.

Whey protein is a complete protein and has a high amount of branched chain amino acids (BCAAs).

It’s also quick and easy to digest.

Additional protein sources are used that offer up varying amino acid profiles and digestion rates.

Calcium Caseinate is derived from skim milk and has 92% protein.

It provides a thick taste that is seemingly impossible to ignore with any weight gainers.

As opposed to whey protein, Calcium Caseinate takes a very long time to digest.

This leaves a steady flow of amino acids in your body, which helps prevent a catabolic environment.

Egg Albumen provides protein that digests at a medium rate in between whey and casein.

This also helps give your body a steady rate of aminos.

There’s a blend of 25 vitamins and minerals including: Vitamin A, C, D, E, B6, B12, Thiamin, Riboflavin, Niacin, Folic Acid, Biotin, Panthothenic Acid, Calcium, Iron, Phosphorus, Iodine, Magnesium, Zinc, Selenium, Zinc, Copper, Manganese, Chromium, Molybdenum, Sodium, and Potassium.

It also has Creatine Monohydrate (1g), L-Glutamine (500mg), Glutamine Peptides (500mg), Choline (250mg), Inositol (250mg), and PABA (5mg).

Side Effects

I definitely saw side effects after drinking this protein powder.

I was bloated, had a stomachache, and just felt sluggish, overall.

This isn’t an allergy friendly protein powder, so definitely steer clear if you have allergies or sensitivities to wheat, egg, milk, or soy.

You’re also going to feel really full.

You may see some other side effects if you’re not used to consuming this many calories, fat, and carbs in one sitting.

Try starting with ½ scoop and slowly work your way up to 2 heaping scoops (1 serving) as your body gets used to it.

Best Uses

This protein powder is best used for gaining weight and bulking up.

It has an incredibly high amount of calories (1270 per serving) and carbohydrates (249g per serving).

There’s also 50 grams of protein in each serving.

The combination of calories, carbs, and protein will help pack on pounds and muscle as long as you’re eating enough throughout the day to hit your individual goals along with working out.


The price of a 6-pound container of Serious Mass is $27.99 from the Optimum Nutrition website.

That works out to 6.99 cents per gram of protein.

I’d say this is pricier than average.

Also, keep in mind that there are only 8 servings in a 6lb container.

This could get expensive if you take the full serving each time and want to continue taking it on a consistent basis.

However, I think it ends up being a good value for the price if you’re looking to gain some weight and bulk up.


I’m really disappointed because this company doesn’t offer a money back or satisfaction guarantee.

They do offer a return policy but it leaves MUCH to be desired.

You have 30 days to return the product as long as 75% of the product is unused.

If that’s the case, then they will refund your purchase to the original form of payment.

Where To Buy

To buy Optimum Nutrition Serious Mass, click here.

Optimum Nutrition Serious Mass: Summary

Factor Optimum Nutrition Serious Mass
Overall Rating Protein Powder Rating 4/5
Ease of Use Big mess and a hassle to use and mix
Taste Chocolate peanut butter flavor – rich and sweet but not overpowering
Macro Analysis 50g protein, 7g fat, 249g carbs.  1270 calories
Ingredients Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Sweet Dairy Whey
Best Uses Bulking up and gaining weight
Side Effects Stomach ache and bloating after drinking
Price/Value Costs $27.99 for 6 pounds.  6.99 cents per gram of protein
Guarantee No guarantee
Where To Buy Click Here

Optimum Nutrition Serious Mass Review

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