Thanks Mrs D for your watchful eye!
I have just received an email reply from the oil supplier, saying that they cannot say it is for internal use in Australia as they cannot support the benefits with any proof, but pointed our that in some other countries they can.

They supply a base oil and a gel.

I cannot believe the benefit I've received from the oil. Muscle pain has virtually stopped!!!
Just have to be careful now and pace myself, as it is easy when you feel better to try to catch up.