Using Liniment

I have been using absorbine vet liniment for a lower back strain. Seems to help, but I am gonna order some blue heat today. ANyways how many times a day should I apply this stuff? ALso is there and reason that it would be harmful if applied too much?

I dont know much about absorbine - but i used Dit Da jow a chinese liniment for my lower back and occasional other sprains - its very effective at stopping inflammation and pain -

The stuff im using now stops the pain and relieves the stiffness temporarily. Does a pretty good job I must say