4'11 weigh 180. Which is better Adipex or Belviq (lorcaserin). I extremely worried about side effects of Belviq (lorcaserin). I've had success with Adipex. No health problems?

YES health problems. You are too heavy as you know. I would recommend both a dietitian and a athletic trainer.
Adipex. is usually recommended for short period and seems more effective and cheaper. Belviq (lorcaserin) can be used for longer has good effect on blood pressure, more expensive and less effective. Combine either with nutritional management and exercise.