Nowadays, there is a wide variety of weight loss pills on the market, which makes it easy for people to pick their eyes, but many people do not know that they are actually health food products that are basically playing the signboard of weight loss pills. Because they are not as strictly regulated as drugs, their quality is difficult to guarantee, and to use drugs to lose weight, you still have to go to those regular diet pills. There is not yet a diet pill on the market that is free of side effects, and the choice of diet pills should be made under the guidance of a doctor. In fact, it is also true that diet pills are used to achieve weight loss by changing the normal metabolism of the body, so how can there be no side effects. The following is a compilation of several common regular weight loss pills and the corresponding side effects, which can give you a reference. 1, orlistat This is the only over-the-counter weight loss drug, which has been listed in China in 2001. The biggest advantage of this drug is the relatively small side effects. It is by inhibiting the enzymes responsible for digesting fat, so that those fats can not be properly absorbed by the body to achieve the effect of weight loss. And basically only in the gastrointestinal action, basically does not enter the blood circulation, also does not act on the nerve center, so the safety is relatively high, once or the world’s only surviving weight loss drugs. Because it acts on the stomach and intestines, some digestive side effects can occur, such as abdominal pain, flatulence, and increased stool frequency. It has also been found to cause liver problems, but this has not been confirmed. 2. Cloacalcin Cloacalcin was approved by the FDA (short for Food and Drug Administration, in this case the FDA of the United States) in 2012. This drug is through the suppression of appetite to achieve the purpose of weight loss, usually as the treatment of morbid obesity adjuvant therapy. After taking adverse reactions mainly have headache, dry mouth, nausea, etc. 3, naltrexone / bupropion compound This is a compound weight loss drugs approved by the FDA in 2014, these two are the role of the nerve class of drugs, the specific mechanism of action is not very clear. The main adverse effects include constipation, nausea and dizziness. In addition, in the FDA approval, they also added a note that these drugs may increase the risk of suicide and other types of mental illness. So you must be careful when choosing. 4.Liraglutide This drug was first approved in 2010 for the treatment of type 2 diabetes and later in 2014 for weight loss, but the measurement is different. It has the effect of regulating insulin secretion and increasing the feeling of satiety, so it can be effective for both type 2 diabetes and obesity. Its main adverse effects are nausea and vomiting, which can also lead to pancreatitis. In fact, these common ingredients of weight loss drugs, except orlistat, are not seen in the market, because most of them belong to the prescription drugs, can not be freely circulated in the market. And those weight loss health food due to more lax regulation, often add some prohibited ingredients to it, in order to achieve rapid weight loss effect. Like amphetamines, sibutramine are very common prohibited added ingredients. They have serious side effects and have been ordered to ban the use of diet pills. Really want to lose weight, or use exercise as a healthy way.