@thirstysugar Having not used it personally but knowing what it is like to be engulfed by health issues, I am assuming that lots of people just don't report the side effects because they don't realise the drug is causing it.
A lot of people will hop on a medicine that has been advertised to perform a certain positive action. I think most people are only observing whether or not the drug they are using is performing this advertised action well or not. They aren't really paying attention to the side effects unless they are severe enough to warrant them thinking what is causing them. Even in that case, I've seen many people have terrible side effects from prescribed drugs and not even begin to think for themselves to figure out if the symptoms they're getting are from the drug they are using.
Obviously you will get people on health forums that are usually a lot more observant to changes in their physiology but I won't make this assumption of the general population. Not really their fault either, as the mainstream medical complex will more often than not just prescribe a new drug for the symptoms that the old drug is causing.