H. pylori
Lemongrass was bactericidal against H. pylori. One report stated that "consuming very small amounts of essential oils can attack infection from H. pylori." Another report stated that the essential oils studied "completely inhibited the growth of H.pylori in vitro."
Antimicrobial Activity of Essential Oils Against Helicobacter pylori

Natural Treatment For H. Pylori, The Silent Source Of Overactive Stomach Acid by Becky Plotner

Nutritional Factors of Heliocobactor pylori Infection by PubMed

A concentration of just 0.002% Manuka or 0.004% Cinnamon Bark essential oils can wipe out several strains of Helicobacter pylori. Resistance of Helicobacter Pylori to Lemongrass did not develop even after 10 sequential passages, whereas resistance to clarithromycin developed under the same conditions. [T. Ohno, PhD, Kyoto Prefetural University of Medicine, Japan]

In many patients, stomach infections (H. pylori) can be a major cause of long-term indigestion. Most doctors treat this with Prilosec combined with 2-3 antibiotics used simultaneously! A better approach is to add Limonene (Tangerine or Orange or Lemon). - Dr. Teitelbaum

Mastic Gum Kills Helicobacter pylori by New England Journal of Medicine

Testimonies
1. Thank you for love you put into the oils. Your H.pylori blend suggestion of equal parts of Lemongrass, Frankincense frereana and Cinnamon Bark helped my friend so much! She put 3 drops of this blend into a capsule, filled the rest with a carrier oil and took this 3 times daily for 20 days. - Christy

2. I had a nasty case of H.pylori. I was told that I "must be put on" triple antibiotics. I cleared it pretty quickly with Mastic gum and Darjeeling tea. Worked like a charm and I haven't had any problems in over 4 years! - Kathy

3. I was diagnosed with H.pylori for the second time in 6 months via a blood test a couple of weeks ago and referred to a gastro MD. I started my oils treatment again and coconut oil, taking care to be diligent and consistent this time. Eleven days later, I had an appointment with the new General Practitioner. I told her that I had been using the oils and asked for a repeat test. She gave me a different test that is more sensitive than the one I had previously. It was negative!!!!!! I plan to continue the treatment for a full month to make sure it is all eradicated. I am praising God and doing the happy dance!!!!!!! I never took the antibiotics and other pharmaceuticals that I was prescribed even though I took a lot of flack from my extended family about it. (My family was gravely concerned considering the consequences of untreated h-Pylori infection. I would have taken the meds if I felt it was warranted, but the side effects and rate of cure was unacceptable to me.) First, I eat half of my meal, then I drink 1/2 cup of filtered warm water with 1/2 Tablespoon of organic raw coconut oil. Then I swallow a vegetarian capsule filled with one drop of Warrior and filled the rest of the way with olive oil. I then finish my meal. I did this two to three times daily depending on how many meals I ate. I plan to continue this for 3 to 4 weeks. I am not suggesting anyone take the oils internally. However, for me, it seemed much safer than the alternatives I was offered. - Cammy