Dextran, also known as haloperidol melitrexin tablets, is an antidepressant and anxiolytic psychotropic drug that treats mild to moderate depression and anxiety. Generally, Dextran is taken for about a year for the treatment of anxiety disorders, but because of the addictive nature of long-term use, long-term use is not recommended, and the specific duration of treatment should be analyzed on a case-by-case basis so that adjustments can be made accordingly. Some people who have anxiety disorders will have their symptoms improved within 2-4 weeks after taking Dextran, or if they take it for 6 months before their symptoms improve, they can reduce the dosage and adjust it according to the degree of improvement, so that the symptoms of anxiety disorders can be gradually relieved until the symptoms disappear before they stop taking the drug, which may take about a year or less. Some people who have taken Dextran for half a year have not seen any improvement in their anxiety disorder symptoms, or have seen improvement in their symptoms after taking Dextran for only 2 weeks, but have not seen any improvement in their symptoms when they continue to take it, so they should consult a professional doctor to change their medication or adjust their dosage. When taking Dexedrine, it is important to pay attention to the occurrence of adverse reactions, such as psychiatric disorders, neurological disorders, gastrointestinal disorders, visual dysfunction, etc. Although the probability of these cases is relatively small or the symptoms are mild, they should not be ignored. In addition, Dextran has some reproductive toxicity and is strictly prohibited for pregnant and lactating women.