"If an alpha cedrene based approach is found to be effective in humans....."
The only research I'm aware of was conducted on mice and those researchers in the conclusion state the above.
That's not to say research is the be all and end all. A general worry I have is about how researchers measure increased muscle mass, few studies take biopsies, so could the increase just be water weight? With the study I quoted above they did note new muscle fibres so I hope it does translate over to humans and hopefully loads of people are messaging you saying how it is building muscle, I'm not privvy to those though and there's a lack of guys reporting results on here and dosages being taken.
I'll break my reply down in parts.
Studies:
The first studies on almost anything are going to be done on mice in order to determine if it is viable to do further testing, including on humans.
Whether more is done usually depends on if the initial researchers are able to get funding to do more or if other researchers do at some point.
Your comments on water weight:
I know that you were making a generalized statement about studies in general, and in some cases if only total weight were looked at, then that may apply; but most studies are going to go into details and researchers aren't going to state something built muscle if it only caused weight gain, they would say weight gain, not building muscle.
With a-Cedrene, it definitely isn't water because the study itself showed muscle and also because the real world consensus feedback is that it helps with recomp and making people look and feel tighter and harder.
In regards to your statement:
there's a lack of guys reporting results on here and dosages being taken
The forums aren't as active as they used to be, as there are many people that read but don't post, but there is a 10 page thread with a lot of feedback as well as feedback in various other threads.
You've also received feedback in this thread, both on Alpha One and on building muscle in general.
Supplements can help build muscle through a variety of pathways and we offer a wide variety of supplements to address the different pathways. Some of these pathways are direct and some may be indirect - for example, if something helps increase strength, then that is helping you build muscle if your diet is conducive to it. Supplements are a tool to help us, but it is important to remember that building muscle is a process and diet and training is crucial to maximizing the amount of muscle that a person builds.
Alpha One is going to help build muscle, but like most things, its going to help build muscle with consistent use. If someone is looking for something that is going to put on a massive amount of weight fast, two things I would tell anyone is that - 1) that's not a realistic expectation with natural supplements unless one is new to training or coming back to training after a long break (muscle memory) 2) If something puts weight on someone super fast, it is almost always going to be water weight, not muscle.
The feedback on Alpha One is that is good for lean muscle gains, recomp, muscle fullness, pumps, and a lot of people see endurance benefits.
I hope that helps.
I never tried to replicate this after that to see if it really was because of the empty stomach... but never had any issues when taking it around a meal. 
