Universal Nutrition Gain Fast 3100 Review

A picture of Best Mass Gainer UK founder, personal trainer Andy Williams
Written By
Andy Williams
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Universal Nutrition Gain Fast 3100 is an 875-calorie mass gainer that consists of 4 different ingredient blends in addition to the basic macronutrients (protein, carbs, fats).

So, are all of these extra ingredients worth the cost? And will they actually help you bulk up?

After checking out the supplement for myself, I created a full Universal Nutrition Gain Fast 3100 review to learn more and see how effective this product really is.

good for weight gain
Universal Nutrition Gain Fast
A tub of weight gainer that I bought for my Universal Nutrition Gain Fast 3100 review
Taste: 8.5/10
Mixability: 8.6/10
Ingredient Quality: 8.8/10
Mass-Building Potential: 9/10
Overall Rating: 8.7/10
  • Contains 875 big calories per shake
  • Provides over 150g of carbs
  • Has 38g of protein
  • Contains 11g of fat
  • Really good taste and mixing
  • Has between 30g and 76g of sugar, depending on which formula you get
  • Protein content, although sufficient, is lower than other mass gainers

Universal Gain Fast 3100 Nutrition Facts

Per 5-scoop serving (229g of powder), this Universal mass gainer has 875 calories, making it a very calorie-dense shake.

The Universal Gain Fast supplement facts

If you’ve read my Universal Nutrition Real Gains review, then you’ll know that Universal Nutrition has a long history of making effective bodybuilding supplements, including mass gainers.

Universal Nutrition’s supplements always have that hardcore edge, which you’ll learn more about in the next section. But for now, here’s a complete nutritional breakdown:

  • 875 calories
  • 156g of carbs
  • 38g of protein
  • 11g of fat
  • 76g of sugar
  • 6g of fibre
  • Anabolic Gaining Agents: 2000mg
  • Metabolic Optimisers: 750mg
  • Lipotropics & Ergogenics: 900mg
  • Gain Fast Specialized Amino Complex: 38,000mg

Universal Nutrition Gain Fast 3100 Ingredient Effectiveness

The Universal Gain Fast ingredients

Just so you know, it appears that Gain Fast 3100 has had a formula change, although the basics seem to have stayed very similar. I’m just going by what’s on the back of my tub.

Universal Nutrition Gain Fast 3100 is very much a carb-heavy mass gainer, which is ideal if you need a lot of extra calories to put on weight.

On the other hand, you could argue that 38g of protein is slightly low, considering the 875 calories per serving. Personally, I think that 38g is about right unless you’re a massive bodybuilder who can make use of more protein per serving.

If you want a mass gainer with 60g of protein per serving, then read my Ronnie Coleman King Mass Gainer review.

Also, because this Universal Nutrition mass gainer has both slow and fast-digesting proteins, it keeps feeding your muscles with amino acids for a longer period of time than whey-only gainers.

Universal Nutrition Gain Fast weight gainer

Obviously, if you’re having multiple meals per day, you don’t always need slow-digesting protein. Still, having a steady supply of amino acids in your bloodstream certainly isn’t going to hurt.

What might (metaphorically) hurt your eyes, though, is the sugar content of Universal Gain Fast 3100. Roughly half of the carbs are from sugars, which is quite a lot, even for a mass gainer (the newer formula appears to have considerably less sugar, around 30g instead of 76g).

Now, if you’re drinking Gain Fast 3100 as a post-workout shake, then your muscles will likely benefit from the big insulin spike and quick glycogen uptake. But if you’re drinking this shake between meals, then you might feel a sugar crash after taking it.

In terms of fat content, you get 11g per serving, which is about right for a mass gainer of this calorie level, not too high, and not too low, either.

The calories (820) contained in Universal Nutrition Gain Fast

Universal Nutrition has formulated Gain Fast 3100 with a series of ingredient blends, namely Anabolic Gaining Agents, Metabolic Optimisers, Lipotropics & Ergogenics, and the Gain Fast Specialized Amino Complex.

These blends include well-known bodybuilding favourites like arginine, beta alanine, creatine, glutamine, and l-carnitine, as well as ingredients that you probably can’t even pronounce, such as 5-methyl-7-methoxyisoflavone, which, I am told, should increase protein synthesis.

Personally, I usually steer clear of supplements with ingredients that I can’t pronounce and which don’t have much scientific support.

As I said earlier in my Universal Nutrition Gain Fast 3100 review, If you get the newer version of this Universal Nutrition weight gainer, then you’ll probably have a different formula with a simplified ingredient list.

Universal Gain Fast 3100 Taste and Mixing

Me making a Universal Gain Fast 3100 shake for my review

Having used a variety of different supplements from Universal Nutrition over the years, I’ve become accustomed to powders that taste great and mix easily the first time.

I’m pleased to report that Gain Fast 3100 is no different. If you read any Universal Nutrition Gain fast 3100 reviews, you’ll see that people really like the taste and appreciate the no-hassle mixability.

As such, you can easily take this Universal weight gainer to the gym with you and drink it immediately after your workout to enjoy its best effects.

I’ve only tried the Chocolate Shake flavour, but I’ve heard that the Vanilla Shake version is pretty tasty as well!

You can see my Bodybuilding.com Signature Mass Gainer review if you’d like to check out another mass gainer that tastes great and has fantastic mixability.

Does Universal Nutrition Gain Fast 3100 Have Any Side Effects?

If you read the various Universal Gain fast 3100 reviews from customers, you don’t see people complaining about any side effects.

A tub of Universal Nutrition Gain Fast

However, if you’ve never taken a weight gainer with this many calories before, then there’s a chance that you might experience some mild stomach discomfort due to a large amount of protein and carbs.

The better your lactose tolerance is, the less chance there is of any stomach-related side effects. Still, drinking nearly 900 calories in one shake can be quite overwhelming for someone who’s new to bodybuilding supplements and bulking diets.

Another possible side effect that applies to virtually any weight gainer is fat gain. Yes, you’re supposed to gain a bit of fat when you’re bulking up, but if you were to drink too much Gain Fast 3100, then you could gain an excessive amount of body fat and create more work for yourself when it comes time to lean down.

Conclusion: Is Universal Nutrition Gain Fast 3100 Worth It For Gaining Mass?

A tub of Universal Gain Fast next to a scoop and shaker bottle

So, we know that Universal Nutrition Gain Fast 3100 is a good supplement for gaining weight, but is it actually worth your money?

While Gain Fast 3100 wouldn’t be my first choice, I can see why it’s popular. Each serving has over 800 calories, so you're getting lots of extra calories but not an excessive or extreme amount.

There’s also plenty of protein and loads of carbs for bulking up. And while this gainer tastes good and has a lot of extras, I just feel that, for the price, there are slightly better options out there.

But don’t let my personal opinions put you off getting Universal Gain Fast 3100. It’s a really good supplement that has virtually no drawbacks, but it’s not necessarily the perfect match for all of us.

The #1 UK Mass Gainer
Crazy Nutrition Mass Gainer
Two bags of Crazy Nutrition Mass Gainer positioned side by side
  • Contains 488 bulking calories from 100% clean sources
  • Packed with a proven 40g protein blend for quick muscle repair and growth
  • Provokes noticable weight gain with 55g of complex carbs from oats
  • Tastes amazing (to my surprise!) and mixes easily
  • Offered at the absolute lowest UK price during April
A picture of Best Mass Gainer UK founder, personal trainer Andy Williams
Andy Williams
Andy Williams is a UK-based personal trainer and bodybuilder who coaches gym-goers of all levels using proven evidence-based techniques in strength training, nutrition, and supplementation. He’s tested over 70 different mass gainers for their ingredient quality and muscle-building effectiveness and regularly shares his findings in his mass gainer reviews.
the logo for Best Mass Gainer UK showing a tub of weight gainer protein powder
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