Veronica is a plant. The parts that grow above the ground are used to make medicine.
People take veronica for problems with the lungs (respiratory tract), stomach and intestines (gastrointestinal tract), and bladder and kidneys (urinary tract). They also take it for gout, arthritis, muscle and joint pain (rheumatism), loss of appetite, liver problems, and diseases of the spleen.
Veronica is also used as a tonic, to cause sweating, to “purify” blood, and to increase metabolism.
Some people gargle with veronica to treat sore mouth and throat. It is sometimes applied directly to the skin to stop foot perspiration, heal wounds, and treat ongoing skin problems and itching.