Mentioned in this blog
http://parkinsonsfocustoday.blogspot.com/



and on looking at original post:

Apo-Levocarb is the generic version of Sinemet CR, which is owned by Merck Canada and distributed by Bristol Myers Squibb Canada. Sinemet CR tablets contain a combination of levodopa and carbidopa, also called levo-carb.

Bristol-Myers Squibb says the discontinuation of Apo-Levocarb has created a sudden new demand for their product and has caused a backlog....

Very curious about above as previous notices of shortage relate to brand name, not generic........ doesn't make sense.......