What the following article fails to mention is the effect that having only one brand of colchicine has on patients who have Familial Mediterranean Fever. It seems that different brands do make a difference for different patients:
"A Giant Pain in the Wallet
How drug companies are making crucial, common drugs up to 100 times more expensive.
By Arthur AllenPosted Tuesday, March 29, 2011, at 7:09 AM ET
How did gout pills get so expensive?A drug called colchicine is all that keeps some 2 million American gout patients from suffering debilitating pain in their toes, elbows, wrists, and fingers. Doctors have prescribed the compound, derived from the seeds of the autumn crocus, for centuries. But patients who take colchicine woke up with a new symptom recently: a giant pain in the wallet."