Jason, thanks for the info. I think you're right about inventory, I've just recently started getting my 4 week supply in 4 separate 3 packs, I assume they have a lot of 3 packs in stock they have to get rid of. I couldn't believe the information about Canadian approval wouldn't be online somewhere. All I found was this, but it confirms what you said:
Brand Name: Rebif
Source: EMD Serono Canada Inc.
Active Ingredient: Interferon beta-1a
Comments: Change in manufacturing process and new product formulation; LIQ(8.8mcg/0.2ml, 22mcg/0.5ml, 44mcg/0.5ml)SC
Therapeutic Class.: Immunomodulator
http://www.hc-sc.gc.ca/dhp-mps/alt_form ... 2007et.txt