Diet pills that speed up weight loss The truth is… You don’t need one. The best way to speed up your weight loss is to change your eating habits. There’s no pill that can give you a quick fix with long-term results. Weight loss supplements may or may not work for you and they could be pretty expensive. If you’re a busy professional, it’s best to focus on nutrition instead that works with your lifestyle and is sustainable for you. Will you consider taking diet pills?