After presenting us with the female version of this stack, the Royal 21 Queen System, 1st Phorm has unveiled their ultimate weight loss stack for men. Royal 21 King System is the name, but you might have guessed that one yourself.
It consists of 3 supplements. 2 of them are shared with the Royal 21 Queen System while the third one is not. With a synergic effect, all of them work for just one single goal and that is helping you with your weight loss goals. It's going to be hard, that's for sure. Weight loss requires a lot of hard work and dedication. You cannot expect this stack to do all the work for you while you're sitting on your ass and eating junk food the entire day. No! It's not how it works. If you want to be successful with your weight loss goals you must get up, set up your goals and through hard work, you must achieve them one by one. Royal 21 King System is there to help you with that by optimizing your chances of success. It aims to speed up your metabolic rate, give you plenty of focus and that feeling of freshness after waking up every day. In addition to that, this stack has even more beneficial effects. Don't worry, we will go through them in this review. No only that, we will also discuss the key ingredients of this stack as well as the possible side effects that might occur. So, now that we know what will this review be about, it is time to start off with it.
What does this stack consist of?
The T in this supplement stands for Thyroid. That's because it feeds your body with all the essential materials for thyroid hormone production. By doing this, T-21 speeds up your metabolic rate and core body temperature. As you probably know, this will result in an increased caloric expenditure.
Raspberry Ketones are chemicals gained from red raspberries, grapes, apples and various other types of berries. They affect a hormone called adiponectin which promotes fat shredding and reduces food cravings. Additionally, raspberry ketones are also known for their ability to speed up metabolic rate which also results in weight loss.
The C in this supplement stands for Cortisol. Often referred to as stress hormone, high levels of Cortisol promote weight gains. As such, they need to be reduced in order to effectively lose weight, and that's just what C-21 does best. In addition to that, this supplement will also provide you with a restful sleep, allowing you to work at your peak down at the gym.
Rhodiola is a plant whose root is commonly used for medicinal purposes. It is known to treat healthy issues such as irregular heartbeat, tuberculosis, diabetes and the regular cold. Nowadays, Rhodiola Rosea extract is used in many supplements for increasing athletic performance as well as energy, strength, stamina and mental capacity.
Royal 21 King
Royal King is the wonder supplement for men. Not only does it eliminate cravings but it also provides its users with clean energy and exceptional focus throughout the usage period. This will allow you to concentrate on your workout routine even more and enable you to do more reps with its energy boosting formula.
Theacrine, a chemical compound very similar to caffeine, is commonly found in tea and coffee. It is used for treating conditions such as common cold and chronic fatigue. Moreover, people also use it as an anti-aging agent. In bodybuilding supplements, Theacrine is most frequently used for decreasing fatigue and improving athletic performance.
Are there any potentially dangerous side effects?
Even though 1st Phorm did its best to annihilate all side effects that might occur with these 3 products, there's still a few of them that tend to occur, although in very rare cases: rapid heartbeat and increased blood pressure. Neither of these is dangerous since they will go away relatively quickly, meaning you don't need to panic.
What do other users have to say about the effects of this stack?
Let's take a closer look at 2 reviews on this stack that we managed to find online:
“I managed to lose 5% body fat in just 3 weeks with this stack. For all of you looking to do the exact same thing, I warmly recommend these 3 supplements since they are pretty much everything you need to make your goals come true! Kudos to 1st Phorm, another monstrosity of a stack!”
“1st Phorm is my favorite brand. Whenever I am preparing for an upcoming bodybuilding competition (read – whenever I need to take off a couple of extra pounds) I turn to their weight loss stacks. 2 weeks ago I was doing just that and I noticed they've just released a new one… and my oh my, am I amazed or what… It's everything I wanted it to be.. and a bit more! 10/10”
Final verdict on Royal 21 King System
Judging by the fact that it's quite hard to find a decent weight loss stack nowadays, it is safe to say that 1st Phorm did a great job with this one. Royal 21 King System's carefully chosen supplements with powerful weight loss promoting ingredients are bound to get the job done. Keep in mind that this product is specifically designed for men. If you are a woman and you're also looking to lose some weight, then take a look at Royal 21 Queen System. With that being said, we believe there's nothing more to be added regarding this awesome stack.
A chemical compund which is structurally quite similar to caffeine.
What Is It Supposed To Do?
Theacrine is used for improving mood, decreasing fatigue and increasing both mental and athletic performance.
Research studies on Theacrine prove that it is able to effective provide its users with improved mood and clean boosts of energy. 
Rhodiola Rosea Extract
A type of plant. Its root is widely used as medicine.
What Is It Supposed To Do?
Rhodiola Rosea extract is commonly used across a variety of supplements because of its ability to improve mental focus as well as increase energy, strength and stamina. This, of course, will result in a drastically increased athletic performance and that's just what you need in order to lose weight quicker.
Studies show that Rhodiola Rosea does indeed have the above-stated effects. 
Chemical compounds commonly found in all sorts of fruits and vegetables.
What Are They Supposed To Do?
Raspberry Ketones are well known for their weight loss and fat shredding properties. By positively affecting a hormone called adiponectin, Raspberry Ketones speed up your metabolism which results in more effective weight loss scenarios.
Research studies prove that Raspberry Ketons are powerful weight loss agents. 
Increased heartbeat rate, usually more than 100 BPM (beats per minute).
What Causes rapid heartbeat?
There is only one ingredient in this stack that could cause rapid heartbeat and it's Raspberry ketones.
Increased blood pressure
Also known as hypertension, is an occurrence when one's blood pressure readings are constantly higher than 150 / 100.
What Causes increased blood pressure?
As was the case with rapid heartbeat, increased blood pressure is also most likely caused by raspberry ketones. Keep in mind that both of these side effects occur in extremely rare cases. Even if you do experience them, there's no need to panic since they will usually go on their own after a short period of time.
How much does Royal 21 King System cost?
You can get Royal 21 King System here for $119.99. Now before you go crazy because of such a high price, keep in mind that you're not getting 1 but 3 different products which, if bought separately, would cost over $180.
Does it really work?
As we already mentioned in the introductory paragraph of this review, Royal 21 King System is bound to work as long as you don't expect it will do all the work by itself. It will reduce your cravings, but you still need to control yourself and stop eating pizza at 2 am. It will give you energy, but you still need to get to the gym and make a good use of it. It will provide you with a good night of sleep, but that doesn't mean you can stay up till 5 am playing video games. Losing weight is 80% hard work and 20% supplementation… and the Royal 21 King System is bound to deliver that 20% to you.
“If you keep up with your workout routine and use this stack while doing so, the results are guaranteed…” – George
“Don't give up on your excercises if you don't see any results after a week. Losing weight takes time, especially if your body fat index is over 40%…” – Will