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.
Not enough is known about the safety of using oregano oil in medicinal amounts. Pregnancy and breast-feeding: Oregano is POSSIBLY UNSAFE when taken by mouth in medicinal amounts during pregnancy. There is concern that oregano in amounts larger than food amounts might cause miscarriage.