Derexin, or haloperidol melitrexin tablets, has the potential to cause tachycardia, but only in some patients with heart disease. Fluperthiazide Melitrexin Tablets are medicines used to treat mild depression, moderate depression, anxiety, menopausal syndrome and other diseases. It is able to transfer the low state of mind of depressed patients to a normal state of mind and can act as a stimulant to the nervous system. If patients with heart disease are accompanied by depression, they are prone to tachycardia when taking Haloperidol Melitrexin Tablets. Because Haloperidol Melitrexin Tablets have the effect of nerve blocking, so it also has a certain effect on the cardiac electrical conduction system of the heart, so people with heart disease combined with depression may lead to tachycardia after taking it. In fact, the main side effects of Haloperidol Melitrexin Tablets are that it is easy to cause constipation, dry mouth, also easy to cause patients to have difficulty in urination, excessive sweating, anxiety and so on. If it is taken in large quantities for a long period of time, there is a possibility of abnormal liver function and even indigestion as well. Therefore, Haloperidol Melitrexin Tablets must be taken strictly under the guidance of a doctor, and must not be taken without authorization, so as not to take the wrong medicine and damage the body.