atlantabiolab said:Cyclamates were banned in the US years ago, based off of the ridiculous Kefauver Act requirements. You may be thinking of sodium saccharin.
Saccharin does have a metallic after taste
As for cyclamate and cancer :
Because the findings in animals suggested that cyclamate might increase the risk of bladder cancer in humans, the U.S. Food and Drug Administration (FDA) banned the use of cyclamate in 1969. More recent animal studies have failed to demonstrate that cyclamate is a carcinogen (a substance known to cause cancer) or a co-carcinogen (a substance that enhances the effect of a cancer-causing substance).
Actually I use both aspartame and cyclamate (Sweet n low)