Excess accumulation of fats in the body is termed as Obesity. Overweight and obesity in the healthcare system are measured in terms of BMI. A person who has a BMI between 25 and 30 is considered overweight, while a person with a BMI of 30 or more is called obese. In the US, several people are affected by the disorder of obesity. If obesity is left untreated, it leads to serious health disorders such as diabetes, hypertension, etc. Nowadays, weight loss pills are available. However, they should be taken only if exercise and diet do not help. The best weight loss pills available in the market to treat overweight and obesity include Orlistat (Xenical), Lorcaserin (Belviq), and Liraglutide (Saxenda), etc. Xenical is the best weight loss medication available in the market. It is a commonly prescribed weight loss medication. It contains Orlistat as the active component. All the weight loss pills have a different mechanism of action. Some act by decreasing the appetite, while others make it harder for your body to absorb fats from the food you eat. The doctor will access the probable benefits of using weight loss pills, its side effects, and your entire medical history before taking these pills. The weight loss pills can benefit an individual who has a BMI of 30 or more, have a BMI of 27 in addition to health conditions associated with an increased weight such as hypertension or diabetes. All the above-mentioned pills are approved by the regulatory bodies of the FDA. All the weight loss pills except Xenical can only be used for weight loss in adults. Xenical can be administered to children of 12 years of age and above. Remember weight loss pills are not for everybody. They cannot be consumed by pregnant ladies, breastfeeding mothers and women who are trying to get pregnant. All these medications are available on prescription. Xenical is also available as the over the counter medicine under the brand Alli. The most commonly observed side effects with these weight loss pills include nausea, bloating, constipation or diarrhea. Take these medications only after consulting your healthcare provider.