Hello This product is used in my family from last 20 year. It is a very trustable pain reliver. It gives litter warmness to the effected area. So it is very usefull in all type of body aches.it can be used even to the children skin under controlled conditions. It does not have any side effects to the skin. Oil is quick pin reliver. Oil can be used for long terms. it is suitable for neck, back, legs etc. etc ’s pain reliver. So buy this Rhumasyl oil from Zandu and forget the pain. Thanks.