Chronic leukaemia tends to progress slowly over the course of many years. Chronic leukaemia is classified according to the type of white blood cells affected by cancer. This topic focuses on chronic lymphocytic leukaemia, which affects types of white blood cells called lymphocytes.
However, like many drugs and herbal remedies, oil of oregano can have side effects and may produce allergic reactions in those sensitive to this family of plants. Origanum vulgare, the source of oil of oregano, comes from the same plant family as basil, hyssop, marjoram, mint, sage and thyme.
Best Answer: The only cautions about oregano oil : Talk to your doctor before taking oregano oil internally if you suffer from iron-deficiency anemia; the oregano might make your condition worse by inhibiting the absorption of iron from foods and supplements. Possible Side Effects -. Side effects are minimal. However, allergic reactions to oregano oil and even a sensitivity to plants in the Labiatae family (thyme, basil, hyssop, marjoram, mint, sage) can occur.