I'm not surprised with those oils. I used to teach myself about the medicinal properties of herbs and spices, a long time ago. and I always have a cupboard full. I used to buy potted herbs to keep on my kitchen windowsill.
There was a time when I could roll the medicinal properties off the top of my head, but menopause gives me brain fog quite often
I will check out those links now.
It really does work, and it's reasonable too. I glanced on amazon and saw where some ( Young Living Oils ) were selling their thieves blend for upwards of 45.00. Also, one of two recommendations were zinc ( I've used Quantum TheraZinc with elderberry, clove, slippery elm & echinacea for over a year now, thank goodness ). https://quantumhealth.com/shop/product/therazinc-oral-spray
They're out of the 4oz but do have the 2oz.
The second of two recommendations was vitamin C. In addition to eating an orange daily, I use Emergen C in a glass of water daily. They sell it in gummies too, my grandson loves those. https://www.emergenc.com/
Lastly, an old-time remedy is 1/2 tsp of baking soda in a glass of water every morning before you eat breakfast ( or drink coffee, whatever ). The soda neutralizes your PH balance. Disease cannot thrive in a PH balanced atmosphere; it needs acidity. NO DISEASE CAN EXIST IN AN ALKALINE ENVIRONMENT https://naturalfoodpantry.ca/blogs/mind-body/no-disease-can-exist-in-an-alkaline-environment
Another who claimed the powers of PH balance was Dr. Hulda Clark, author of 'The Cure for all Diseases'
, which I have, and have read. I also have her zapper that I need to get back out.