How long does it take to stop taking Besudil/Yilaike?

Belumosudil mesylate tablets (Belumosudil) is a Rho-associated protein kinase 2 (ROCK2) inhibitor, which was first developed by the American company Kadmon and is used to treat chronic graft-versus-host disease (cGVHD). This disease is a common immune complication after hematopoietic stem cell transplantation. The patient's immune system becomes disordered and attacks its own tissues, causing chronic damage to the skin, liver, lungs and other organs. The mechanism of Besudil is to regulate the immune response, inhibit inflammatory pathways and promote the restoration of immune tolerance, thereby achieving long-term control of the disease. As for how long it takes to stop taking the medicine, this is closely related to the individual's condition, treatment response and immune recovery status.

Generally speaking, the treatment cycle of besudil is long, and most patients need to continue taking it for several months or even more than a year. BecausecGVHD is a chronic immune disease, premature discontinuation of medication may lead to resurgence of inflammation or reactivation of the immune system, which may trigger a rebound of the disease. Doctors usually gradually evaluate whether the dose can be reduced or discontinued based on the patient's clinical improvement. For example, when symptoms such as skin sclerosis and respiratory restriction are significantly improved and immune indicators tend to be stable, the dose may be considered to be gradually reduced; only if the condition remains stable after stopping the drug, the drug may be truly stopped. However, this process needs to be carried out under strict medical monitoring to avoid disease recurrence due to premature discontinuation of medication.

Judging from clinical application experience, some patients can achieve lasting remission after long-term use of besudil, but some still need to maintain low-dose long-term treatment to prevent the recurrence of immune imbalance. Doctors will comprehensively consider multiple factors such as liver and kidney function, tolerance, adverse reactions, etc. to determine the course of treatment. Generally speaking, the therapeutic goal of besudil is to achieve long-term stability of the immune system rather than short-term symptom relief. Therefore, most patients need to take it for a long time, and the discontinuation time must be carefully evaluated based on individual response.

Reference: https://www.drugs.com/pro/rezurock.html