The uncomfortable problem is that diet pills will make you uncomfortable. Watch the dosage. I will eat less for a while at first, and I will be fine after recovery.
Harm, this is based on the method and time of use. You can't eat all the year round, and you can't eat too much at once. Just like taking anti-inflammatory drugs, it is harmful to health all the year round. People who eat 9- 10 tablets at a time also collapse. But it's absolutely no problem in the short term.
Don't take any diet pills for a year in a row, the problem is not big, don't worry. (unless it's rubbish)