The Fusion Starter

Mr Fusion

is the ultimate coalescence of pump and energy.
  • Unrivaled Pumps and Blood Flow
  • Sustained Clean Energy & Focus*
  • Power and Strength Intensifier*

Mr. Fusion provides an incredibly clean energy while maximizing pump and endurance. You'll be more focused, energized, and perform better through your workout. The amount of caffeine and stimulants is much more mild than other pre-workouts, so you shouldn't feel a 'jittery' or anxious.

Mr. Fusion



  • Improved focus and energy
  • Increased Nitric Oxide Production
  • Improved Blood flow the muscle
  • Decreased Muscular fatigue
  • Increased endurance and muscular performance 
  • Steady No- Crash Performance 


Anyone needing to improve energy and performance from their workout but doesn't want something that makes them feel jittery. This is an ideal product when looking to maximize muscular performance, increase strength, and endurance.


If you've taken pre-workout before, you will notice a bit of the tingling feeling caused from beta alanine. This is normal and likely the first thing you'll notice. You will also notice increased energy and alertness before much else.

During your workout you'll notice an increased pump (blood flow) in the muscle you're training. Set after set you'll notice you can keep pushing further than you would normally and aren't fatiguing as quickly. You'll be able to workout harder and longer than normal with less overall fatigue.


What is Isothority?

Isothority is a cross-flow cold-microfiltered whey protein isolate. Sounds fancy, right? Let's break it down: Isolate is the purest form of Whey Protein available. You get less filler, carbs, lactose, etc. This means it also digests much more easily without stomach issues.

The method by which the protein is extracted is much more precise. Rather than using extreme heat, acid washes, and other harmful processes, we utilize a filtration system to isolate the protein.

This leaves an incredibly clean protein that is easy to flavor, has a great texture, and digests extremely well. There truly is not another protein that is this pure, and tastes this good.

Who is it for?

Everyone. If you are exercising, restricting your calories, or cleaning up your diet - you'll benefit from Isothority. Isothority is especially important after your workout as it will help you recover faster, be less sore, and boost your metabolism.

How do I use it?

The most important time is after your workout - 1 scoop mixed with 6oz of water (or milk) will do it for most everyone. It can also be utilized at any other time you would need a protein source; as part of a meal, as a milk shake, or just to increase total protein intake for the day.

What will I notice?

This is a tricky question. Here's another way to look at it: What would you notice from eating a chicken breast, or egg whites? In general, you will be less sore after your workouts. Your body will adapt and gain strength and endurance much more easily. You'll also boost your metabolism and stave off hunger more easily when taking a quality protein source in.

Amino Factor

What is Amino Factor?

Amino Factor is a simple product. It only contains three ingredients:

  • L-Leucine
  • L-Isoleucine
  • L-Valine

Those three amino acids make up the Branched-Chain Amino Acids or BCAA's. 

Basically, these are the most important amino acids you could take in to help protect and rebuild muscle tissue around workouts.

Amino Factor is a 2:1:1 Instantized BCAA product. That specific ratio is one that has been clinically proven to increase muscle protein synthesis, speed up recovery, reduce DOMS (delayed onset muscle soreness), and reduce muscle catabolism (waste). 


Customer Reviews

Based on 79 reviews
Marco C.
Good Supplement

I use mr fusion as my preworkout and just want to say it’s amazing. It taste great, mixes well and keep my workouts going. Ive seen a good increase in weight. Definitely a must try.

Thanks for your review Marco, Mr. Fusion is a great product and we're happy you are enjoying it.


I’m very impressed with this product. It tastes amazing, and provides everything that a pre-workout should, including serious focus. There is no crash after, which is awesome.

Thanks for your review Shana, Mr. Fusion is a favorite of the employees here. Just so tasty!!

Brandi W.
Must buy

If you are struggling with the right amount of energy without the dreaded side affects pre-workouts can bring, Mr.Fusion is a must buy! High recommend!

Thanks for your review Brandi!! Welcome to the family!!

Chad M.
LOVE this flavor

Love this flavor!

Glad you like the product Chad!!

Rebecca B.
Love It

Great pump and energy without the crash. Tastes great too!

We're glad you like the taste Rebecca!!

Brady C.
Mr.Fusion is the best!!

Honestly one of the better pre-workouts, out there. Love the energy and pump you receive!! 10/10

Thanks Brady!

Whitney M.
Tasty and works

Great energy and tastes great!

Thanks Whitney!!

Kurt R.
Really like it

Seems to work very well I have noticed I have more energy and endurance thru out my workout

Thank you Kurt!

Amazing customer service

You know there great people when you get a hand written thank you card with your purchase

Thank you Jack!!

Flavorful Pre-workout Drink

I’m always looking for good tasting products and this one definitely has a great taste. The blend of pineapple and coconut is just right to get a very refreshing drink that you could make every day. Nutrithority does not disappoint!!

Thanks Matt!!

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