Capsule imprinted APO 020 might be delayed-release
omeprazole 20 mg (generic
Prilosec).
I can't find a picture of APO 020, and some Canadian drugs are hard to identify for certain.
The manufacturer's description is:
20 mg - opaque pink / opaque reddish-brown gelatin capsule
Here is some info on omeprazole:
http://omeprazole.drugs.com/
Edited to add:
Apotex also makes omeprazole for the US market. Apotex USA describes the capsule as:
Pink opaque body, reddish brown opaque 'APO 020' in black ink