Colchicine is used to relieve pain and swelling when you have gout flares (attacks). It is also used to prevent gout attacks while starting on urate-lowering therapy such as allopurinol or febuxostat.
(RheumInfo(external link), Canada, 2019)
Note: this video is from Canada so may have information that differs from New Zealand recommendations. In New Zealand colchicine is also called Colgout.