Customize your care with Boiron single medicines for highly targeted relief. Argentum nitricum 30C is a homeopathic medicine that targets symptoms of occasional stress such as nervousness, apprehension, stage fright, and heartburn caused by stress.* The non-drowsy meltaway pellets dissolve under the tongue without water and come in easy dispensing tubes to take on the go. *Claims based on traditional homeopathic practice, not accepted medical evidence. Not FDA evaluated.