Allium species, particularly garlic (Allium sativum), have a long history of use in traditional medicine for cardiovascular conditions, including angina. Traditional systems such as Ayurveda, Traditional Chinese Medicine, and European herbalism have employed garlic as a remedy to "improve heart health," "thin the blood," or "relieve chest pain." This traditional use is based on the belief that Allium species can improve blood flow and reduce symptoms associated with restricted blood supply to the heart.

Scientific evidence for the use of Allium (especially garlic) in angina is limited but not entirely absent. Some clinical and preclinical studies suggest that garlic may have mild antiplatelet, antihypertensive, and cholesterol-lowering effects, which could be theoretically beneficial for cardiovascular health. However, there is a lack of robust, high-quality clinical trials directly evaluating Allium species as a treatment for angina pectoris (chest pain due to heart disease). Most studies focus on surrogate markers such as blood pressure or lipid levels rather than angina symptoms themselves.

In summary, the use of Allium for angina is primarily justified by traditional practices rather than strong scientific evidence. While some related cardiovascular benefits have been documented, direct support for angina relief is limited and not conclusive.