For more info here is a reading for you: https://futuresrecoveryhealthcare.com/blog/harmful-effects-diet-pills-supplements/

There is a thin line between what is termed medicine and poison. Every pill has contradictions but pharmaceutical companies shields these just to be in business. There are lots of other ways to lose weight . Exploit it

I agree with Nimisingha S. Deinkuro it is just business and you will be surprised some of the pills do not work despite having negative side effects on users

Because it has a very dangerous and bad side effects.

تؤثر في الكبد وتعيق قيامه بوظائفه بشكل صحيّ وسليم، بسبب زيادة نسبة السموم في الجسم؛ للإفراط باستهلاكها.

تؤثر في المعدة وتسبّب القرحة، لعدم قدرة المعدة على تحمّل العبء الإضافيّ الناتج من الحبوب.

تمنع الجسم من الاستفادة من بعض أجزاء المواد الغذائيّة بسبب تحويلها إلى حرارة.

تسبب الاكتئاب.

ترفع ضغط الدم، وتزيد معدّل نبضات القلب، وبشكل خاص الحبوب التي تحتوي على الكافيين

These pills having negative impact on other parts of the body.

The reason is societal believe and propaganda that slim, long hair, fair complexion is beautiful while otherwise is neither attractive nor beautiful. This is the wrong view that has affected so many teenagers and even old people to want to look slim at all cost...

It is due to lack of contentment and l agree with Nimisingha S. Deinkuro and Joan Nyika contribution.

I think sometimes we should accept our bodies as they are and practice healthy lifestyle. It goes along well with building our self esteem instead of fighting to be like other people of society

I recommend Nimisingha S. Deinkuro ' answer

Please go through the following RG links.

Article Anti-Obesity Drugs: Long-Term Efficacy and Safety: An Updated Review

Article Anti-Obesity Drugs: A Review about Their Effects and Safety

Article Cardiovascular Effects of Current and Future Anti-Obesity Drugs

most of these products are fake, don't list all of the hidden components,

and LACK of the FDA approval,

very little number had been approved and licensed to be used safely for example

Orlistat

One should avoid weight loss pills due to adverse events. It is better to follow the non-pharmacologic options for weight loss.

weight loss pills must be avoided. Weight loss through natural foods, exercises are the best practice.

because it is not a part of our natural body, such pills have various Sid-effects on good health. may be its helpful for the fat destruction but they also effect our natural immunity.

Check side effects also