Reductil slimming pills can help maintain natural level of two chemicals known as serotonin and noradrenaline in your brain. The main ingredient in this slimming pill is a substance called sibutramine which reduces your craving to eat by affecting chemicals in nerve cells and preventing them from being absorbed into the cells again. On taking this slimming pills, you may not be able to consume more food than is needed which helps you lose weight.