According to WebMD, certain ingredients in Oxydrene Elite may cause miscarriages and are unsafe for use by individuals with heart conditions or high blood pressure. Otherwise the ingredients are rated as possibly safe for short-term use.
Among other ingredients, Oxydrene Elite contains rhodiola rosea root, eleuthero root and schisandra chinensis, according to BodyBuilding.com. WebMD reports that rhodiola root is possibly safe for short-term (up to four weeks) use. Its long-term safety is unknown. Eleuthero root is unsafe for individuals with heart conditions or high blood pressure but is otherwise safe. Side effects of eleuthero root include drowsiness, changes in heart rhythm, anxiety and muscle spasms. Schisandra chinenesis is possibly safe. It may worsen peptic ulcers and heartburn. It is unsafe during pregnancy because it can cause miscarriages.