It is an effective balm it has been in India since 1970 .and people are believing it without any doubt .once you apply it it gives you amazing results .It is not so much costly it will not effect your budget and its one box will stay at least 15 to 30 days if you use it regularily. It relieves you from headache, backpain, knee pain.And many types of zandu balm are there all have different purpose .It will take time to relieve your pain but it will not make you unhappy.It will give you