hiya, my little boy is nearly 3 and with him we tried everything, i found the best thing was anbesol, you can get it from pharmacy's. and its the same stuff they numb your gums with if you go to the dentist and need a needle, im not to sure on the age guide line for it though you'd have to ask,, hope this helps :)
Danielle, Mason nearly 3 and 3 Week old Rebecca