Levohydroxypropylpiperazine capsules is an oral medication, some patients are prone to gastrointestinal discomfort, so in order to reduce the stimulation of the gastrointestinal tract and injury, clinically, it is generally recommended to take after meals, to avoid taking the drug on an empty stomach on the gastrointestinal tract damage. The main role of the left hydroxypropyl piperazine capsules is to stop coughing, clinically commonly used in the treatment of respiratory tract infections caused by cough, through the cough reflex arc link inhibition, to achieve the effect of suppressing coughing, this drug belongs to the symptomatic cough medication. In the treatment of cough is recommended with anti-inflammatory drugs. For example, cefixime. From the effective control of respiratory tract infections in a way to reduce the symptoms of cough, and finally until the cough symptoms gradually disappear. Known or possible hypersensitivity to this class of drugs is prohibited, pregnant and lactating women are prohibited. Levohydroxypropylpiperazine capsules have a certain inhibitory effect on the nerves as well as receptors when taking the drug, which can easily lead to drowsiness during the patient’s medication, so the patient should try to avoid driving or working at heights in the process of using the drug so as not to cause accidents. Please use the drug under the guidance of a doctor.