I have been using the Dr. Dale products for years, this product specifically on any case with viral burden. Homeopathy works subtlety with the body and aligns with terrain theory. To keep a healthy terrain means that toxic overburdens and oxidative stress are managed properly so that bacterial and viral burden will stay under control as the body already produces it's own viruses and bacteria. Bio-Tox Vi works well to help restore the body to a healthy terrain along side good nutrition, proper detoxification, remediating radiation exposure and stress management. Some cases need a higher dose then others, with homeopathy you can safely play with dosage.