Looks very similar to this one...
http://www.antiquebottletrader.com/medicine.htm
Would think the Cure would be more valuable...
Also found these references to Clements bottles:
CLEMENTS TONIC/ Baldwin 1973:117; Fike 1987:233
THIS BOTTLE ALWAYS REMAINS/THE PROPERTY OF/CLEMENTS TONIC/LIMITED [Base:] G. B. W. L./ Fike 1987:233
Being as the last one has "Limited" in it's embossing, perhaps it is Canadian or Australian?
(still looking)....
Just found a New Zealand website listing a Clements medicine, but couldn't locate the bottle pic.
More info..
CLEMENTS TONIC, Amber (also light to medium yellowish green & medium olive green), rectangular with beveled corners, 8†and 6 3/4†sizes and other variations from other countries.
Also found a reference to a storekeeper in Australia selling Clements Tonic in the late 1800's.
[just noticed you're in Australia...any gifs here wearing a dunce hat?[8|]
I'd presume it was from the same company as the Clements Tonic although the cure is one I've not seen before, nice find [] .
PS CLEMENTS TONIC for $50 on that bottletrader site [8D] , think I'll have to sell a few and put a % towards the site costs for Roger [] , they are pretty common here.