Yeah i think you would find it hard to get in a supermarket. Most Chemists should stock it.
-Arnica assists the body's natural response to shock, injury, fatigue and bruising and aids normal muscle recovery after strenuous excercise or exertion.
-Aids normal defence mechanisms in times of trauma and after surgery.
-Also helps the body's natural ability to cope with long distance air travel and helps restore normal sleep patterns.