Proprietary Blend, formulated by Ingrid Naiman and loosely based on the famous Four Thieves formula as discussed in the fascinating pdf linked below. It dates to the time of the Plague in France.

Potent Protection, the Historic Four Thieves Formula and Ingrid"s Immune Formula based on it, 9 pages

Alpinia officinarum (galangal), Allium sativum (garlic), Zingiber officinalis (ginger), Juglans nigra (black walnut), Artemisia annua (sweet Annie), Lomatium dissectum, Verbascum thaspus (mullein leaf), Arctostaphylos uva-ursi (bearberry), Ulmus rubra (slippery elm), Ligusticum porteri (osha), Capsicum minimum (cayenne), Black cumin, Nutmeg, Coriander, Cinnamon, Cloves, and Camphor in distilled water, organic alcohol, organic honey, vegetable glycerin, and organic cider vinegar with essential oils of wild oregano and rosemary.