White unscored capsule-shaped tablet imprinted APO on one side and TR50 on the other side is 50 mg
tramadol - generic
Ultram.
You can find an image at apotexcorp.com
More info:
http://tramadol.drugs.com/
I'm not a pharmacist or a medical doctor. This message is not medical advice, nor is at an offer to provide medical advice. All drug identifications should be validated by a licensed MD or pharmacist.