As the New York Times wrote: “Unlike artificial sweeteners, Senomyx’s chemical compounds will not be listed separately on ingredient labels. Instead, they will be lumped into a broad category — “artificial flavors” — already found on most packaged food labels.”

Apparently Senomyk tests its products on cloned human fetal cells lines.

I'm confused as to how it is legal to clone fetal cells.

As the New York Times wrote:

“Unlike artificial sweeteners, Senomyx’s chemical compounds will not be listed separately on ingredient labels. Instead, they will be lumped into a broad category — “artificial flavors” — already found on most packaged food labels.”