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Quinine and Iron Metabolism During Infection

Posted By Jennifer Shipp | Oct 01, 2026

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Iron Metabolism During Infection

Iron metabolism is a target for many of the antimalarial drugs so malaria and diphtheria share iron as a focal point in terms of medicating a patient and as we’ve already discussed, a number of infectious, iron-loving bacteria and certain viruses are susceptible to quinine as a stand-alone medicine. Artemisinins are activated by iron to generate reactive oxygen species medicines that rapidly kill the malaria parasite as well as most other pathogens that are not part of the natural, beneficial flora in our bodies. For example, in malaria, iron supplementation actually increases malaria parasites in the liver as a result of the hepcidin pathway (the hepcidin pathway is the body’s main headquarters for regulating iron levels throughout the body). The hepcidin pathway is activated by iron levels in different situations including:

  • When iron levels in the body get too high
  • When there’s inflammation in the body
  • When red blood cell production is either too low or too high (due to hypoxia / low oxygen levels in the body)

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Hepcidin creates a negative feedback loop to prevent there from being too much or too little iron in the body. Thus, hepcidin plays a role in the development and maintenance of diseases like anemia, polycythemia vera, or hemochromatosis. 

Quinine, one of the most important medicinal alkaloids found in Cinchona bark, like iron and also magnesium, forms a salt when paired with sulfate though quinine hydrochloride is another salt that’s commonly used in medicine. Sulfate is a vital detoxification substance that plays a role in mucus production, liver detox, digestive enzyme release, and bone and circulatory health. In the liver, sulfates are used for “sulfation” of toxins, drugs, and waste products which makes these toxic substances water-soluble so that they can be removed from the body. Sulfates protect the gut from toxins via the role of sulfates in mucin production too. Indeed, sulfation of steroid-hormones like estrogen helps regulate the solubility, storage, and excretion of steroids, which in turn plays a role in intestinal motility as well as reproductive system health and other vital aspects of physiology. Sulfates such as magnesium sulfate (epsom salts) can reduce inflammation and increase cellular protection. But magnesium specifically can compete with iron for absorption in the body. Nonetheless, sulfate is important. Quinine forms a salt with sulfate to make “quinine sulfate”, a solid medicinal agent that benefits the body in a number of ways during infection.

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It’s worth noting here that in conventional medicine, ammonium sulfate is used to purify the diphtheria antitoxin and to study its interaction with cellular membranes (sulfate transport). Studies have shown that the diphtheria toxin interferes with the cell’s sulfate and chloride transport mechanisms within cells, especially under acidic (low pH) conditions. In other words, the diphtheria toxin interferes with electrolyte balance within cells and it interferes with the cell’s ability to naturally remove toxins among other things. So sulfates actually play a role in diphtheria infection. It’s also important to note that ammonium sulfate breaks down into sulfate and ammonium ions. Though ammonium ions are beneficial for protein synthesis and acid-base balance, high concentrations can be toxic to the brain, liver, and muscles. Normally, the body converts excess ammonium ions to urea in the liver so that the urea can be safely excreted from the body by the kidneys.

In summary, the quinine sulfate salt can be beneficial as a detoxifier in addition to quinine’s anti-inflammatory action in the body, but better yet, work with the whole herb, Cinchona officinalis and the various medicinal alkaloids it contains  to get the most out of a quinine-based protocol for healing. 

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Resources

Al-Harbi, L. N. et al. (2022). Cinchona officinalis Phytochemicals-Loaded Iron Oxide Nanoparticles Induce Cytotoxicity and Stimulate Apoptosis in MCF-7 Human Breast Cancer Cells. Retrieved April 25, 2026 from https://pmc.ncbi.nlm.nih.gov/articles/PMC9565860/#:~:text=Plant%2Dbased%20nanoparticles%20have%20the,phytosterols%20have%20also%20been%20identified.

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