Mention me going west, inducing sickness (6)
I believe the answer is:
emetic
'inducing sickness' is the definition.
(I've seen this before)
'mention me going west' is the wordplay.
'mention' becomes 'cite' (to cite is to mention or quote).
'going west' shows that the letters should be reversed in order (letters heading to the west or left).
'cite'+'me'='citeme'
'citeme' back-to-front is 'EMETIC'.
(Other definitions for emetic that I've seen before include "Purgative" , "It makes one sick" , "It would make you sick" , "Ipecac is one" , "Vomiting inducer" .)