As I bought this product by seeing ads and advertisements on TV and online stores .Well, it doesnt provide much results as ads are showing that it provides fast and good relief from pain on joints and headache.But I didnt experienced any results by using zandu balm.It was such a waste of time.When I applied it on my forehead, it doesnt even slows down my headache.So in my own view, zandu balm was not at all effective.