How long have you been using narcos before you stopped? The only thing that would concern me with you taking the vicodin is you may trigger cravings, and maybe even some withdrawal symptoms once they wore off. Also, I would assume you have an opiate tolerance, therefore 10mg hydrocodone might not do much for you at all only leaving you wanting more. If you have been making it a point to stop using opiates, it would probably be best to no use them at all.
What's your reason for wanting to take them? Are you looking to get high, or are you in pain?