Prepared Aconite Tuber (commonly known as processed aconite root or "Fu Zi" in Traditional Chinese Medicine) has a long history of use in Eastern herbal medicine, particularly in China. It is traditionally used to "warm the yang," dispel cold, and alleviate pain, including chest pain thought to arise from "cold obstruction" or "yang deficiency" syndromes. In such contexts, chest pain is interpreted differently from the biomedical perspective, often linked to energetic imbalances rather than specific cardiovascular pathology.

Scientific evidence supporting the use of prepared aconite tuber for chest pain is minimal to nonexistent. Most modern pharmacological studies on aconite focus on its alkaloid components (notably aconitine), which are known for their toxic effects on the cardiovascular and nervous systems. While some animal studies indicate possible analgesic effects of properly processed extracts, the risks of toxicity and arrhythmias are well-documented, and there is no robust clinical evidence validating its efficacy for chest pain in humans according to biomedical standards.

In summary, the use of prepared aconite tuber for chest pain is supported primarily by tradition rather than scientific validation, and the evidence for its efficacy in this regard is weak (rated 1/5), with significant safety concerns.