Customize your care with Boiron single medicines for highly targeted relief. Made with a pure active ingredient, Ferrum phosphoricum 30C is a homeopathic medicine that targets symptoms of low or mild fever of gradual onset such as flushed face and discomfort.* The meltaway pellets dissolve under the tongue without water and come in easy dispensing tubes to take on the go. Boiron single medicines are ideal for adults and children and do not contain artificial colors, flavors, sweeteners, or preservatives. *Claims based on traditional homeopathic practice, not accepted medical evidence. Not FDA evaluated.