Do dangerous drugs naturally represent safety? If a product uses the words "natural" and "herbal", it seems to make people feel safe. Actually, it's not. Exceptions abound. For example, tobacco leaves, coca leaves (the source of cocaine), marijuana (the source of marijuana drugs) and poppy (the source of heroin and morphine) are all natural ingredients, but they are harmful to health. Therefore, herbs can be divided into two categories: edible herbs-no harmful side effects; Medicinal materials-wrong formula or improper use will be harmful to health. Some pharmaceutical manufacturers have no professional qualifications, so they can't use herbs or plants correctly when developing drugs. Other manufacturers are driven by business profits, completely ignoring the safety of consumers. The following are some herbs with dangerous side effects: ephedra, which contains ephedrine, the effective ingredient. Ephedrine is a common ingredient in diet pills, which can lead to heart disease, blood poisoning and hemorrhagic stroke. The FDA has obtained 150 death reports related to ephedra. According to the journal Neurology, taking 32 mg of ephedra every day will increase the growth rate and increase the risk of stroke. However, the label of the drug containing ephedra shows that people should take as much as 100 mg every day. At present, the federal government of the United States has banned ephedra as an auxiliary diet. Herbs with high caffeine content Sometimes, when ephedra is taken with plants with high caffeine content (such as melon seeds), it will lead to sudden death such as stroke, spasm and hypertension. Herbs containing a lot of caffeine include guarana seeds, kola nuts, tea trees (used for jasmine tea, green tea and other teas sold) and coffee beans. These herbs are widely cultivated all over the world, such as Masi and Sri Lanka. They are very popular substances to lose weight, because it is said that caffeine can promote metabolism. According to different varieties, the caffeine content of Guanana fruit is as high as 10%, the caffeine content of tea tree is about 3.5%, and the average caffeine content of coffee beans is about 2.2%. Experts agree that excessive caffeine intake will lead to anxiety, insomnia, irregular heartbeat, addiction and even death in patients with hypertension. When some of these plants containing a lot of caffeine are mixed with herbs with diuretic effect to become ingredients in diet pills, they will make the body excrete a lot of water and cause temporary weight loss. This makes people mistakenly think that the caffeine-rich diet pills they take can burn fat. In addition, excessive diuretics can damage the kidneys. Guar Gum Guar Gum is a weight loss ingredient, which was banned in the 1990s. Guar gum is a complex carbohydrate, which swells when wet, so it will feel full when eaten. However, its side effects include severe stagnation of stomach, throat and intestinal yin. Salicylic acid is contained in the bark of Bai Liu white willow, which is the effective component of aspirin. The FDA pointed out that this herb is used in some children's medicines, but the labels of these medicines indicate that they do not contain aspirin. White willow bark can cause some internal bleeding symptoms in adults who are sensitive to aspirin. The American Anti-Health Fraud Committee appealed to the public to pay attention to the fact that the use of white willow bark to treat chickenpox or flu in children will lead to a liver disease-Wright syndrome.