Haven't heard of this product. To take oregano oil internally requires that a substantial meal be in the stomach first to prevent the burning you describe, or it can be taken with milk (my understanding; I haven't taken oregano oil internally exept with food and did ok with it). Did you try putting the oregano oil in a saline nasal wash (netti pot or nasal spray bottle) and using it that way instead?
Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD (Lupus?), Osteoporosis, Anemia, T- & B-Cell Lymphopenia, malabsorption/malnutrition, Lyme Disease (Igenex Lab IgM WesternBlot positive/CDC negative), etc.
Meds: Pulmicort, Injectable Vitamin B12, Herbs, Nutritional Supplements, Homeopathy.