Dendrobate - I always look at the ingredients of an item rather than individual reviews. Many supplement ingredients can be ineffective at best and dangerous at worst. The ingredients listed in this are caffeine, 5htp, beta meth, yohimbine hcl. The thought of taking 5-htp in any form really makes me uncomfortable.
5-htp is a naturally element in the body. Generally your body creates all it needs but occasionally it doesn't which is why 5-htp has shown some benefits to individuals who exhibit low serotonin levels in the body. It should not be taken with a long list of medications and if you are taking any medications, please check with your doctor before you take it. Also you should not drink alcohol while taking any pill with 5-htp. Also if you have any cardiovascular issues (high blood pressure, abnormal heart rhythm, etc) you should not take it. If there is any chance you would be pregnant or could become pregnant you shouldn't take it. If you have any pre-existing medical treatments, I'd definitely talk to your doctor, as I said this is an ingredient that makes me extremely nervous.
Here is an article but there are some other ones as well that talk more about the dangers of 5-htp.
Caffeine - Caffeine is found in every fat burner out there because it has shown to increase calorie burn slightly. Really though caffeine can be taken in many other forms that are better and cheaper.
Beta Methoxy Phenylthylamine - I couldn't find a lot about this one but it seems similar to 5-htp and it can have psychotic effects and definitely shouldn't be mixed with other medications. It is possible to experience hallucinations (5-htp also has a possibility of hallucinations) and messes with brain chemistry.
Yohimbine - Now this is an interesting one and I can see why its in a body building pill. It is sometimes used to treat impotence and from looking it up, it sounds like it can cause 'bad side effects' but I can't find exactly what those may be. This one may also be one that effects brain chemistry as it shouldn't be taken with many medications including those for treating depression and shouldn't be taken by those with heart problems.
Honestly this pill overall looks quite dangerous. It has a good amount of caffeine as a stimulant and has at least 2 ingredients that can cause complications of those with heart issues. 3 ingredients mess with brain chemistry and usually when you take any drug that messes with brain chemistry, you shouldn't take any other drug that messes with brain chemistry. It seems a bit irresponsible.