Today we’re going to be putting Serious Mass vs USN Anabolic to see which one comes out on top as the best mass gainer for skinny guys.

If you’re a hard training skinny guy with a super-fast metabolism you’ll already know that building muscle isn’t easy. However much you eat and however hard you train you never get the results you deserve.

And unless you start consuming enough calories each day to satisfy your metabolism, fuel your workouts, and support recovery, repair and muscle growth you never will.

The only way to do this effectively is by enlisting the help of a weight gainer, or mass gainer as they are better known.

To help you choose the best one for you we are going to be comparing what we consider to be the top 2 on todays market – Optimum Nutrition Serious Mass and USN Muscle Fuel Anabolic.

You can see our 10 best protein powders for 2018 here.

Let’s Start By Taking A Look At What’s In Them…

Optimum Nutrition Serious Mass:

Optimum Nutrition Serious Mass is tailor made for hard training hardgainers.  It is said to be the ultimate hardcore muscle growth and repair formula for skinny guys with high metabolisms who struggle to build muscle.

To help you meet your daily calorie requirements each serving of Serious Mass is crammed with a massive 1,250 calories. And that’s with no added sugar and less than 5 g of fat.

Each serving also contains 50 g of blended protein. This is made up of whey protein concentrate, calcium caseinate, egg albumen, and sweet dairy whey to support your muscle building needs.

There is also 250 g of carbohydrates in each serving in the form of maltodextrin to fuel your intense workouts and help replenish your depleted glycogen stores afterwards.

In addition, each serving of Serious Mass also contains a blend of 25 vitamins and essential minerals, plus creatine, glutamine, glutamic acid and MCT’s. Read the full review.

 USN Muscle Fuel Anabolic:

USN Muscle Fuel Anabolic is described by the manufacturers as ‘The Ultimate All-In-One Mass Shake’. They also claim it’s the number 1 muscle building catalyst that also boosts performance helping you squeeze the most from your workouts.

Each serving of Muscle Fuel Anabolic has 564 calories and contains 4.4 g of fat.

Each serving also contains 53 g of blended protein. This consists of whey protein concentrate, soya protein isolate, milk protein isolate, egg albumen and calcium caseinate. This formula is designed to refuel and repair your muscles and speed up your recovery.

There is also a 72 g carbohydrate matrix per serving containing maltodextrin, dextrose monohydrate and fructose.

And there’s also 5 g creatine per serving to optimise performance along with a wide range of free form amino acids. Read the full review.

Serious Mass vs USN Anabolic- Which Is Most Effective?

Serious Mass:

We found users of Serious Mass to be very impressed with the gains they made.

Here’s what some of them are saying…

“This is were this gainer is great not only do you see great results but its not as heavy on the stomach as other gainers”

“I saw results after two weeks”

“The result is excellent. Gained 7 kg in 2 months.”

“I gave it a shot and gained the results I’ve been longing for.”

Muscle Fuel Anabolic:

Our research has also found users to be very happy with the results they are getting from using Muscle Fuel Anabolic.

Here’s what some of them are saying…

“Have gained a stone in weight – first time ever.”

“Used before always notice gains with this product would definitely recommend well worth the money”

“I only used it during training days and I gained some(~10kg) weight(NOT FAT)”

“Very pleased with this product, gained 5lbs in the past 3wks with the aid of this”

You can read all the customer reviews for Muscle Fuel Anabolic here.

How Do They Compare On Taste?

We can’t find much between them when it comes to how they taste.

Then again how good or bad a thing tastes is down to the individual.

In our own experience, plus what we have learned from our online research, the general consensus of opinion is that they both taste as good as each other.

Some users did find some flavours a little sweet, but the majority seem to agree that they are both pretty good for taste. 

What Are They Both Like For Mixing?

We found that Muscle Fuel Anabolic had the slight edge when it came to mixing. It seemed to produce a smoother shake than Serious Mass.

It also seemed to dissolve quicker and more completely in just a shaker cup, no problems with lumps or grittiness.

Serious Mass made for a noticeably thicker shake. Probably due to it having over twice the calories. There were also times when the shakes had a bit of a gritty or lumpy texture to them.

The problem was easily solved by mixing it in a blender though so no real problem there.

When Is The Best Time To Use Them?

According to the manufacturers, Serious Mass is best used immediately after your workout and in between meals. They also say that for best results you should take 2-3 servings per day.

And it’s the same for Muscle Fuel Anabolic, For best results USN recommend taking a serving straight after your workout or as a snack between meals.

Serious Mass vs USN Anabolic Pro and Cons…

Serious Mass:

Pros…

• Highly effective hardcore mass builder
• Quality protein blend
• Tastes great
• No bloating
• Mixes well in a blender
• Good value for money

Cons…

• Can be a little sweet
• Sometimes doesn’t mix too well in a shaker

Muscle Fuel Anabolic:

Pros…

• Good muscle builder
• Excellent protein blend
• Great taste
• Mixes well in a shaker
• No bloating
• Good value for money

Cons…

• Can be a little sweet

How Do They Compare On Price?

Right now you can grab a 2.73 kg tub of Optimum Nutrition Serious Mass for £24.49 which works out at £8.63/kg.

And you can get a 2 kg tub of USN Muscle Fuel Anabolic for £25.95 which works out at £12.98/kg.

You get FREE delivery on both of them if you get them on Amazon.

As you can see Serious Mass is the better option when it comes to price/value for money.

Conclusion: Serious Mass vs USN Anabolic – Which Is The Best Mass Gainer For Skinny Guys?

We found both of these mass gainers to be very effective muscle builders.

However, when it comes down to which one is the best mass gainer for skinny guys, Serious Mass is the clear winner.

It’s got the massive calorie content and the protein you need to fuel recovery and growth – over twice the calories of Muscle Fuel Anabolic.

So if you’re a hard training skinny guy with a superfast metabolism that has been struggling to pack on muscle and weight, we highly recommend using Serious Mass.

Where’s The Best Place To Buy Serious Mass?

We recommend buying on Amazon. You’ll be able to check out all the customer reviews before you do and also the latest prices and discounts.

You’ll also get FREE delivery and be able to order with confidence knowing your purchase is covered by Amazon’s usual customer protection policies.

Click here to go to the Amazon page for Optimum Nutrition Serious Mass.