PRODUCT DESCRIPTION
The Pro Mass Stack is currently our best selling stack and a combination of two of our most potent bulking orals designed to do one thing only: rapidly increase your gains and strength.
Bulking is a crucial part of any bodybuilding plan that requires the right techniques, nutrition and supplementation to see the kind of results that only athletes can get. Our Pro Mass Stack has been designed to support long term increases in size and strength that are needed to scale your workouts each and every time. The ability to push harder and further results in a greater increase in muscle size and definition.
The common problem that many lifters find is breaking through that dreaded plateau that engages the body to generate more muscle. Stacked together, the ingredients across both these products work synergistically to elevate red blood cell production which in turn provides a raised levels of oxygen to the muscles being exercised and better pumps in those crucial sets.
Run alongside an intense workout routine and clean diet, our Pro Mass Cycle will help you break through this barrier and accelerate the bulking process rapidly by combining two of our most powerful anabolic orals.
Each cycle includes two bottles each of the following:
ANAGEN XX has been scientifically engineered as the catalyst for explosive gains in size being highly regarded by elite bodybuilders and power lifters as one of the best bulking agents currently available online. Clinically formulated with the ground breaking pro-testosterone compounds, the basis of this pioneering product is built upon “stacking principles” that layer a selection of extreme anabolic compounds that trigger the hypothalamus and pituitary glands to naturally elevate your own testosterone levels. More free testosterone in the body means increased strength, higher levels of protein synthesis and improved nitrogen retention within the muscles.
DIANAGEN XX is without question one of the most powerful legal steroids currently marketed online for size and strength. and a potent fast acting muscle and strength agent. With a huge serving of 180 caps in every bottle, our product sets the benchmark for pharmaceutical grade anabolics and is unrivalled in the industry.
Designed as a legal alternative to the anabolic compound known as Dianabol (Methandrostelone), this hardcore formulation has been scientifically developed to promote hardcore mass and superior strength gains. Making a huge name for itself in the 60s, Dianabol was given the name the “King of Oral Steroids” and used by many famous bodybuilders to enhance their physiques.
The development team that work alongside Flexx Labs built the foundations for DIANAGEN XX to provide a product with unrivalled anabolic & androgenic properties.
DIRECTIONS

ANAGEN XX and DIANAGEN XX are to be taken together seven days per week.
Dosing is as follows:
1st dose: In the morning with food.
2nd dose: 4 hours after first dose with food.
3rd Dose: (DIANAGEN XX ONLY): 4 Hours after second dose
You can read further information on both these individual products by visiting our Shop.
Ruben –
I have always been skeptical about the use of these types of supplements, but two of the other guys in my gym had been talking about this cycle, so i decided to take the plunge. 3 weeks in and i cant believe the difference in my body, everything from my gains to my strength and overall mindset has improved
David L –
Great product! solid gains
James Currey –
great experience with your products so far. Hitting the compound moves and a high calorie diet, I have definately put on some decent muscle using this stack.
Carl Jacob –
the pro mass stack has been a life saver to my training programme. I tried so many different supplements which have all turned out to be garbage. these two supplements combined are a serious powerful combo for strength.
Spencer –
This was the first time trying the Flexx labs products and was blown away at how well they have worked – instant and immediate results. muscle size has increased and my strength is progressing much further than before. i would avoid taking these product late in the evening
SA –
Impressive! Took this for the full 6 weeks cycle, worked out hard and tried to eat as clean as possible at the same time. put on at last 15-20lbs of muscle
Pierce –
very good. happy with results