1. Drugs to improve metabolic rate: Most of these drugs contain ephedrine, which comes from a plant called ephedra and can also be manufactured artificially. Ephedrine has been used to treat asthma for many years, and it is also a common cold medicine in Chinese medicine. This is a herbal stimulant. Like other stimulants, the benefits of ephedra are far less than its potential harmful side effects. As a diet drug, it is often mixed with caffeine in the same formula. Caffeine can slightly increase metabolic rate, while ephedrine can suppress appetite, but it can cause hypertension, arrhythmia, insomnia, nervousness, hand tremor, seizures, heart disease and stroke, and even lead to death in severe cases. According to Maglione's evidence in 2005, Ephedra will increase mental illness experience, serious emotional disorder, violence against others and suicidal behavior. In view of this, the US Food and Drug Administration stipulates that these products can only contain 8 milligrams of ephedrine per serving at most, and cannot be used continuously for more than 7 days. The safety of long-term use is still unknown.
2. Drugs to suppress appetite: Some of these drugs contain phenylpropanolamine hydrochloride, which is a commonly used stimulant in cold medicines. Are diet pills really effective? These drugs are safe for people without cardiovascular problems and high blood pressure, but after stopping using them, they still need to control their diet to prevent weight gain.
3. Fat burning medicine: Many people say that chromium can burn fat. Although it is closely related to fat metabolism, only people with chromium deficiency will have fat metabolism problems. Excessive intake of chromium will not accelerate the consumption of fat, so it is ineffective for people who are not short of chromium. However, the recommended daily nutritional intake for adults in the United States is 50 to 200 micrograms of chromium.
4. Other drugs: Are diet pills really effective? As for Hypericum perforatum, the US Food and Drug Administration said that this substance has not been proved to be safe and effective for weight loss. Another drug, Garcinia Garcinia, reported in the Journal of American Medical Association 10/998165438 that this herb and products containing this herb are ineffective in losing weight.
Therefore, when choosing diet pills, we must consider its safety and effectiveness, otherwise it will be in vain. One thing that diet pills have in common is that they don't give instructions on how to improve their eating habits, so once they are stopped, most of them will rebound. There is nothing in this world for nothing, or controlling diet and moderate exercise is the best, healthiest and safest long-term weight control method.