Lorcaserin
"I took it for a week.  The first 2 days brought a headache & then that resolved.  I was also a bit nauseous those 2 days.  I did notice that I had almost no appetite right away so apparently it is effective for satiation.  I had to stop taking it though because of the following: 
Cough started immediately & resolved the day after I stopped taking it.
Dizziness & difficulty with balance.
Deep sleep & trouble getting going in the morning, when the dizziness was worse.
Sneezing & sore throat.  Now this may sound like maybe I just had a cold, but I didn't.  I am a nurse and I know the difference.
Some difficulty with memory & concentration.
Dry mouth, but that is no big deal.
Another deterrent for me is that I can't take my migraine med with it"