What is the difference between Tilidine and Tilorisen (Huacosi)? Why is it not recommended for some patients?

Pitolisant (called Pitolisant in some literature) and Pitolisant actually refer to the same drug, namely Pitolisant, is a histamineH3receptor antagonist/inverse agonist used to treat narcolepsy, especially narcolepsy. It blocks H3 receptors in the central nervous system and increases the release of histamine, thereby increasing arousal levels and attention, and improving symptoms of excessive daytime sleepiness. The emergence of different names is mainly due to the differences in trade names or translations in different regions, and their pharmacological effects are essentially the same.

Some patients are not recommended to use Pitolisant mainly due to its drug characteristics and potential risks. First of all, the drug can be metabolized by CYP3A4 and CYP2D6, and there is a risk of interaction with a variety of drugs, such as certain antidepressants, antipsychotics and strong CYP inhibitors or inducers, which may lead to abnormal blood drug concentrations or increased adverse reactions.

Secondly, Pitolisant may cause abnormal heart rhythms, palpitations, or prolongation of the QT interval in some patients, especially those with heart disease or who use other drugs that prolong QT need to be cautious. Therefore, patients with a history of heart disease, severe liver and kidney damage, or patients with a higher risk of drug interactions are not recommended for use or require strict monitoring.

In addition, Pitolisant may occasionally cause anxiety, insomnia or gastrointestinal discomfort. For patients with sensitive nervous systems or severe mental illness, they should be used with caution after weighing the pros and cons. In general, although tilidine/tilolixin is an effective drug for the treatment of narcolepsy, some patients are not suitable for use due to drug metabolism characteristics, cardiac risks and potential drug interactions, and require individualized evaluation under the guidance of a professional doctor.

Reference materials:https://www.drugs.com/