Optimum Nutrition Serious Mass Reviewed

8.2 score
[Editors rating (8.2)] = (FightingReport.com) score (8.2)/10

Editor rating: 8.2 / 10
User's rating: based on 0 user ratings
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Optimum Nutrition Serious Mass Reviewed Review Facts

Typically all we hear about are the people who are on a weight loss journey, but what about those who can't gain weight? An exceptionally fast metabolism and an active lifestyle can make adding pounds very difficult. Thankfully there are products like Optimum Nutrition Serious Mass Gainer Protein Powder. Spending countless hours at the gym working your hind end off just to stay thin with only lean muscle can be quite defeating if you are trying to bulk up. With this supplement, you will be able to pack in the calories and carbs to help you put on weight. Additionally, you will be giving your muscles the Protein they need to recover quickly and build rapidly. You will also get a healthy dose of a variety of vitamins and minerals. While we know you try and have great nutrition every day getting enough vitamins and minerals can be hard and this product will certainly help. Using this product right after your workout or as a snack will provide you with the best results. Make gaining weight and adding muscle easier than ever by giving this a try in your daily routine.

Editor's Pros & Cons
  • High Calorie
  • High Carbohydrates
  • Added Vitamins & Minerals
  • Contains Glutamine
  • Increases Energy
  • Excellent Meal Replacement
  • High Protein
  • Mixes Well
  • Limited Flavor Variety
  • Pricey
  • Contains Aspartame


Optimum Nutrition is a leader in sports nutrition and athletes, as well as active people all over the globe, use their products to increase their fitness goals. They hold exceptionally high standards for their products and the ingredients that go into their products. Regardless of what type of supplement you are looking for Optimum Nutrition has you covered. Reaching across the globe people have trusted them to give honest clean products that will aid greatly in your muscle building adventure. Many know when you shop with ON you are getting exactly what your body needs to become your best and healthiest self.


To be quite honest most people do not love the taste of this product. With the huge amount of Protein, it is expected that it is not going to taste very good. Some flavors are better received than others. Of course, you will have to judge for yourself. The mouthfeel is decent and it becomes very thick upon mixing. The taste is a bit synthetic and it has been said that it is overly sweet. We assume this is to try and help with flavor. When mixed with other ingredients, such as fruits, the taste improves quite a bit but by itself, it may be a bit difficult to swallow.


This product offers five different flavor options. Limited choices are not necessarily a bad thing. You will be able to choose from Chocolate, Vanilla, Banana, Strawberry, and Chocolate Peanut Butter. The Chocolate flavors are commonly better liked than the Vanilla. Having limited options can be frustrating but when you start to look into all the different drinks and foods you can make with it you will realize you can change up the flavor with no problem. This product truly works and it does mix well which helps the lack of fabulous flavor and that is why so many people continue to use it across the globe.


You will get smooth consistency after mixing this product. It will be exceptionally thick but it dissolves well so you won't have to worry about clumps in your drink. Some have noted that it does not mix with water nearly as well as milk and the consistency when mixed with water can be off-putting. In addition to not being lumpy, you will not have to worry about that gritty feeling that sometimes comes along with this type of product. Upon mixing it really is smooth and thick. If you let it sit for too long it will become exceptionally thick and quite possibly undrinkable.


Meeting daily Protein goals, building muscle, and gaining weight when all needed is a pretty tall order. Choosing Optimum Nutrition Serious Mass will take all of those boxes and check them off with ease. You get a major boost to your Protein levels which will enable your muscles to grow and strengthen with ease. You will also be able to consume a massive amount of calories to ensure you don't lose weight but actually gain some. This product has helped many people in their weight gain goals and when used daily will improve recovery and muscle building time. Combined with diet and exercise you are sure to get your desired results and you will notice the changes pretty quickly.


The ingredient list for a product like this is pretty lengthy. This makes sense because they are trying to ensure you get the vitamins and minerals your body craves as well as plenty of calories to aid in weight gain. They use Maltodextrin followed up with a Protein Blend that consists of Whey Protein Concentrate, Egg Albumen, Sweet Dairy Whey, and Calcium Caseinate. This blend of Protein is excellent and will release at different rates to ensure you get a Protein boost for hours after consuming. It also contains natural as well as artificial flavors. They include a vitamin and mineral blend that pretty much has your daily needs checked. Lastly, there is Lecithin, Potassium, and Medium Chain Triglycerides. This is a pretty standard list of ingredients for a product such as this.


Protein is what makes up our muscles. With this product, you will get fifty grams of Protein per serving which is a huge amount. Needing about a gram of Protein for each pound you weigh can be a difficult goal, when adding this to your routine it becomes a simple thing. The combination of Proteins used in this formula will allow your body to reap all the benefits throughout your day. They break down at different rates and release to your muscles accordingly. This means that for hours after consuming your body will be able to utilize the Protein packed drink to your full advantage. Making your muscles stronger and making you feel great. No matter if you are running on a treadmill at home or lifting at the gym this product will easily give you the Protein needed to maintain a healthy lifestyle.


When you are trying to gain weight your caloric intake has to be larger than most other peoples. Eating enough food to gain may be impossible depending on your metabolism and the build of your body. This product offers twelve hundred and fifty calories per serving. This is a great amount and while it will fill you up you won't have to spend a fortune as you would have to do if trying to add that amount of calories into your diet with food. Due to the great number of calories, this product is perfect for meal replacement or snacks throughout your day. With the added vitamins and minerals you are sure to find all the things your body needs to continue on with your exceptionally healthy lifestyle.


Nowadays people avoid carbs like the plague. They are known for adding extra weight and while most don't want that there are some that it is exactly what they need to be able to gain weight. Per serving you will get two hundred and fifty grams of carbohydrates. This is very high. Adding carbs like this into your daily routine will increase energy and as long as you stay active help you not only gain weight but also gain muscle. In a world that wants to hate on carbs, those who need to pack on a few pounds will be appreciative of the number of carbs found in this product.

Amino Acids

Amino Acids are the building blocks of our muscles. They are responsible for fast recovery and maintaining your muscles. Our bodies produce some Amino Acids naturally but others we need to get from the foods we eat and the beverages we drink. All the essential Amino Acids or Block Chain Amino Acids can be found in the Protein that we consume. With the excellent amount of Protein in this product you can rest assured that those sore muscles are going to become a thing of the past and you will also be able to gain muscle faster and easier than ever before.


There is always a debate when looking at this type of product over what qualifies as a filler and what does not. For some, flavoring is a filler but naturally, if you order something in Chocolate there is going to be flavoring. When buying Optimum Nutrition's product you won't have to worry about fillers as they keep their product pretty clean. There are flavors used and there are items to help with consistency but they are not put in the product to simply bulk them up. While many products on the market are dirty and full of fillers to make it look like you are getting more bang for your buck, this product doesn't fall into this category.


When trying to pump up your calories it makes sense the serving is going to be a bit more than your average Protein powder. You will need to use two heaping scoops to get a full twelve hundred and fifty calories. There are two size variations available. You can order a six-pound container or a twelve-pound bag. The six-pound container holds roughly sixteen servings which means the twelve-pound container has about thirty-two servings. Depending on how much you decide to use it will depend on how much you need to buy to ensure you are getting the calories you need to be at a healthy weight.

Side Effects

There are a few side effects that should be discussed in regards to this product. As with any product containing Milk Whey you will need to be careful if you have an intolerance to Lactose. If you do you may suffer from cramping, bloating, upset stomach, nausea, or diarrhea. Additionally, when consuming this much Protein you may make yourself susceptible to kidney or liver damage. You will also want to be careful as some of the vitamins in this product are not water soluble. What does this mean? It means that your body does not excrete the extra and it can lead to a plethora of problem that is related to overdosing certain vitamins.


The major advantage of this product is the fact that you will finally be able to gain weight without the need to eat everything in sight. It is healthy and well balanced so you aren't just filling your body full of junk. It gives you a smooth consistency and a decent flavor so drinking it daily or using it in your cooking is easy. You can use this product at pretty much any time throughout your day making it extremely convenient. High Calories, Carbs, and Protein levels are all things that make this product great and help to make sure you not only meet weight gain goals but also have faster recovery times and increased muscle building potential.


There are only a couple things we can see that some may consider disadvantages. There is certainly a lack of flavors and sizes. While we understand can be frustrating but something most can get over fairly easily. Next, it is a bit pricey. Most budgets will be able to fit it in and it will certainly be more affordable than trying to fit those calories in with food items. Overall, there are not a lot of disadvantages to this product, it works as it is supposed to and gives you the Calories, Carbs, and Protein needed to gain healthy weight and build your muscles.


Optimum Nutrition is stringent when it comes to the quality of their ingredients. They have been known to send entire shipments back to where they came from just because they did not feel it met their quality standards. When looking for a high-quality weight gainer product you really can't go wrong. The time has been spent to ensure the consistency is great and while the flavors may be lacking a bit even they are decent for the type of product that this is. Expecting quality when spending this kind of money is not something that should be scoffed at and ON agrees. They make sure to give us what we need and want to continue to gain muscle and weight.


Some would say this is debatable because of the cost. It is a bit costly but when you look at what you are getting we feel the price is completely justifiable. The limited size options and flavor variety may also decrease the overall value a bit. Looking at all of the benefits and the ease with which you will start gaining some weight outweighs these small things that most don't like about the product. You will have the Amino Acids your muscles need to reduce recovery time and continue to bulk up. On top of all this, the results you want you will be able to see starting quickly after starting this product and continuing use.

Key Features

1250 Calories Per Serving
50 Grams of Protein
250 Grams of Carbohydrates
25 Added Vitamins & Minerals
20 Grams of Sugar
Good Amino Acid Profile

Bottom Line

When it comes down to it if you are trying to gain weight this product will work. It is relatively affordable and the consistency is good. It is lacking in well-received flavors and is limited in flavor variety, however, these are small things when you think of the effect it is going to have. You won't have to wait forever to see results as most people start to gain within a week of using it. This company is honest about what they put into their product so you will know exactly what you are putting into your body. Overall, this is a good product that does just exactly what it says it will and it does it quickly.