Mercurial Medicines

Using ethnographic data, this article suggests that the therapeutic use of various mercury compounds in siddha medicine has so far not decreased despite international regulation of the substance and discussions surrounding the safety of mercury. Siddha practitioners portray mercury as central to their therapeutics. The article demonstrates this for different contexts, including the preparation of mercuric medicines; the production of mercury amulets; and recent research studies on mercury-based siddha drugs, targeting, for instance, dementia-related syndromes. Contextualizing siddha mercurial procedures and preparations through interlinking therapeutic, historical, and global frames underscores the fact that mercury use in siddha medicine today derives from alchemical traditions, but also transcends them. It is embedded in political contexts of science and healthcare in India, as it answers to concerns about safety and toxicity and at the same time takes center stage in negotiating siddha medical specialty and alterity vis-à-vis other medical practices, most notably ayurveda.