Nitricum acidum is used as a Homeopathic medicine (mineral acid). Homeopathic potencies accredit their strength and efficacy to the electromagnetic signatures of the original substrate; these are scientifically created dilutions and succussions of medicines such that generally not even a molecule of the original substrate or medicine is present in the medicine.

As a Homeopathic or used simply as a micro-nutritional, Nitricum acidum has demonstrated effectiveness against the following symptomology: ill-effects due to abuse of digitalis (& derivatives); -ill-effects due to mercury exposure; -persons who have chronic diseases, catch cold easily, and disposed to diarrhea; excessive physical irritability; cachexia (Boericke) -"It is one of the chief antidotes of mercury..." (Clarke)