It's not good to take Apo-Cephalex and weed together. It might put your life in danger!
yes
yes http://www.healthycanada.com/index.php?option=com_deeppockets&task=contShow&id=12581&Itemid=129
If prescribed by the veterinarian, yes. If not, NOTHING for humans should EVER be given to a dog
I'm on this stuff now. It smells and tastes horrible (kind of like old garbage) but it works. If that's your only concern, don't worry. If it's been in your cupboard for a while, I'd toss it and get a new batch.
Cephalexin and Nuva Ring has no known drug interactions.