From those tablets that are sold as dietary supplements, you can hardly get something. Clenobuterol or ECA (ephedrine-caffeine-asperin) should be taken when you are a sportsman and have someone willing to advise you on these drugs. It's not worth eating them that way.
Unfortunately, the best way is to eat less and spend more energy (IIFYM or flexible diet)
Yes, but this is a short-lived result. If you want to lose extra pounds without their further return, then only proper nutrition and sports will help. On nutrition, I can advise the 10Levels application, in which calories are calculated according to your parameters and the PP menu for every day with recipes is written. Convenient because there is control and a systematic approach. And in sports, it already depends on your physical data. At the very least, you need to start moving more.
Working drugs: ECA (ephedrine, caffeine, aspirin), harsh fat burners like Lipo-6. A terrible amount of side effects. Lose weight slightly, if at all, without diet and exercise. Everything else is "dummy".
A proper diet is enough - it will make you slim much faster than you think.
From personal experience - no. All these funds, supposedly for weight loss, are just a way to make money on lazy people who want to lose weight quickly and without straining. But it doesn't work that way. Let's remember the saying "you can't take a fish out of a pond without difficulty." Losing weight is working on yourself, which requires patience, willpower. You need to learn to limit yourself in the desire to eat too much or unnecessary, when there are many temptations around.
Again, from personal experience (minus 30kg in 2 years): the most effective and safe way to lose weight for the body is to get fewer calories than burn.
If at the same time you eat fewer calories than it spends, then yes. However, you will lose weight in this case and without pills. But if you continue to eat, you will not lose weight.
There are pills that can be prescribed by a doctor to help people with metabolic disorders to correct these very disorders and more successful weight loss (due to excess fat and not useful tissues ), but these pills can only be prescribed by a doctor and still do not replace but complement proper nutrition with calorie restriction.
Here is a good, it seems, article: http://www.gastroscan.ru/handbook/121/6708
The basis for weight loss is still not tea (usually just laxatives and diuretics), and not " fat burning "supplements, and not even exercise. - Diet - in the sense of the difference between consumed and spent calories (and it is created mainly not at the expense of the gym, but at the expense of limiting - reasonable - calories).
I met a figure, and it seems realistic to me ... That the contribution of any "fat burners" is within 10%. That is, if you lost 1 kg, then at best 100 grams of it is the merit of "pills, capsules".
However, here I am not an expert; general medical knowledge, plus once led clients in weight loss, well, I have been following my weight for the last 13 years.