Overview of Yuan Qi
Quick Facts
| Property | Description |
|---|---|
| Active ingredient | Sotalol Hydrochloride |
| Forms | Oral Tablet, Injectable Solution |
| Pharmacological Class | Antiarrhythmic Agent (Dual Class II and Class III) |
| Origin | Synthetic Compound |
| General Purpose | Stabilizing cardiac rhythm and rate |
Defining Yuan Qi: The Identity and Pharmacological Class
The prescription-only medication Yuan Qi contains the active ingredient Sotalol Hydrochloride, which is clinically recognized for its essential role in cardiovascular therapy. It is formally classified as an antiarrhythmic drug that possesses a dual-mechanism action, placing it uniquely into two categories of the Vaughan Williams Classification system: Class II (a beta-adrenergic receptor antagonist) and Class III (a potassium channel blocker). This singular dual functionality distinguishes Sotalol from single-action agents and is critical to its pharmacological identity.
Composition, Origin, and Forms of Sotalol
The chemical origin of Sotalol is purely a synthetic compound, being a derivative of methanesulfonanilide. This active substance is commonly supplied as a racemic mixture of its d- and l-isomers, both contributing necessary properties to the final medication. Yuan Qi is produced as a single-agent product and is available in multiple pharmaceutical preparations, including the primary oral tablet form and a solution for controlled intravenous administration in specialized settings. The availability of both forms facilitates continuity in the route of administration across various clinical needs.
General Purpose for Cardiac Rhythm Disorders
The principal purpose of administering a medication with the dual action of Sotalol is to provide stability to the heart's electrical conduction system. Sotalol's role is to help prevent the recurrence of heart rhythm disturbances. A typical use scenario involves stabilizing a patient's cardiac electrophysiology by concurrently slowing the heart rate and deliberately extending the time heart cells need for electrical recovery, thereby maintaining a more regular and controlled heart beat in the face of complex cardiac rhythm disorders.
Regulatory References

