Is Tofranil promoting bed wetting

Tofranil bed wetting killer medicine

Tofranil is a medicine prescribed for treating bed wetting for last 30 years or more. http://www.webmd.com/sleep-disorders/medications-to-treat-bedwetting  link mentions that deaths have been reported due to overdose of this medicine. But it still remains FDA approved drug.

I would appreciate if some one could provide more details about year wise sales of tofranil in various countries.

The status of bed wetting among kids and adults will also be a relevant information. I guess that all these years incidence of bed wetting among kids and adults must be increasing.

The reason for above (if that is true) is that the medicine tofranil could be promoting bed wetting.