Heal-All (Prunella vulgaris) has a long history of use in traditional herbal medicine, particularly in Europe, Asia, and North America. Traditionally, the plant has been valued for its purported abilities to "heal all" manner of ailments, including wounds, sore throats, and inflammatory conditions. Some ethnobotanical records and folk practices have mentioned its use in addressing symptoms associated with chest pain, particularly when that pain is believed to be related to inflammation, infection (such as sore throats or mild bronchial congestion), or minor injuries rather than cardiac causes.

However, there is a lack of robust scientific evidence supporting the efficacy of Heal-All specifically for chest pain, especially chest pain of cardiac origin (angina or myocardial infarction). Most of the research on Prunella vulgaris focuses on its anti-inflammatory, antimicrobial, and antioxidant properties, but these studies are generally preclinical (in vitro or animal models) and do not address chest pain as an endpoint. The historical use likely stems from the plant's reputation as a general remedy for pain and inflammation, rather than any targeted or proven effect on chest pain.

In summary, the use of Heal-All for chest pain is based on traditional practices, not on clinical or scientific validation. It should not be considered a substitute for evidence-based treatments, especially in cases of serious chest pain that may indicate a cardiac emergency.