Proprietary Blend, formulated by Ingrid Naiman, and very 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.
The formula is quite unlike most herbal formulas, both in the complexity and ingenuity of its creation and production. After studying the history of the Plague and the work of Nostradamus, efforts were made to create a very strong and effective remedy with a lot of garlic and essential oils. The formula tastes a bit like a salad dressing and can actually be added to a salad dressing if one prefers not to use the eye dropper method of delivery.
Garlic has been shown to inhibit the growth of both candida and aspergillus. Osha root, a Native American herb consumed by bears when they come out of hibernation and have a pressing need to detoxify, is also a potent herb for the respiratory system.
Potent Protection the Historic Four Thieves Formula and Ingrid”s Immune Formula based on it, 9 pages