In Traditional Chinese Medicine (TCM), 'Qingyin Wan' is an herbal formula used for treating throat disorders, particularly those involving voice issues or throat pain.
 
The specific ingredients and effects of Qingyin Wan typically contain a combination of herbs such as Platycodon grandiflorus (Jiegeng), apricot kernel (Xingren), forsythia fruit (Lianqiao), and loquat leaf (Pipaye).
 
These herbs are believed to have properties that clear heat, moisten dryness, alleviate cough, and soothe the throat, helping to relieve throat discomfort and restore voice function.