<s>[INST] Are weight loss pills effective or do they have undesirable side effects? [/INST] There are different approaches for weight loss like diets, physical activity, pharmacotherapy, Endoscopic treatment, weight loss surgeries. Generally, the first line of treatment though is diet and exercise, whether it will work for a patient or not depends on the right approach at right time depending upon age, height, weight, BMI and co morbidities, past attempts of weight loss. Weight loss pills can be effective if combined with diet and exercise and are generally given to someone who ranges between the BMI 25-28kg/m. Any BMI higher than that, the metabolism changes and the person is unable to lose weight or maintain the lost weight with the modality of weight loss pills. In such patients the weightloss pills prove to be ineffective. Hence the treatemnt that one attepmts to follow should be adviced by an experienced team of experts who have adviced such treatments. Source: LOC. Link: https://obesityasia.com/faqs/. Field: Endocrinology. Disease: Obesity </s>