welcome to Bluelight MartinBr!!!
I too am on suboxone after almost a decade of an 8ball a day China white IV heroin habit I acquired after stopping my oxycodone which was at 500mgs a day. I started on 8mgs Suboxone in detox then got out on 10mgs then right away worked my way down from that high dose to 2mgs and now I'm on 0.3mgs three times daily as suboxone works better at low doses and feels more like full opiate agonists do, high doses block themselves from giving euphoria and pain relief which is why doctors are so quick to up somebody's suboxne dosage so the patient won't be feeling any buzz from taking their dose. I never realised how strong this stuff is till I tapered down and realised I got higher on the lower dose than I did on the higher one.
You need to Lower your dose then you won't feel so crappy in the mornings that's a lot of opiates to be taking 16mgs of bupe is around 600-650mgs of hydrocodone to be exact which is probably more vicadone than you have ever done in a day(considering you still have a liver) which is why your tired. If you went back to vicodan then you would have to take handfuls of the stuff every hour just to keep your self outta withdrawal cause you jacked your tolerance so high. Just something to think about you shouldn't be so tired like that it isn't normal. I know what you mean by waking up at 300 am sick in withdrawals it sucks just you and your sick thoughts can really drive you nuts. Even of I got high before bed at 10oclock I used to wake up every night at 1 am and 4 am then 6 am cause my body would wake me up sick as hell needing more opiates if I didn't have anymore then I had to lay there in a pool of sweat till I went to work. What a shitty and horribly lonely life to lead.
Its Nice to have you on board though
Good luck let me know if you need any help and have fun.

These will give you some insight on how the site is run and the rules
Green lighters(newbies) guide-
http://wiki.bluelight.org/index.php/Greenlighters_guide
Bluelight user agreement-
http://wiki.bluelight.org/index.php/...reement_(BLUA)
If you want some help getting around the site or a buddy to talk to then you can always message me Im on the list of people willing to adopt you can find the link if you want to be adopted by me or another experienced member here-
Nmi adoption program-
http://www.bluelight.org/vb/threads/...Program-v-2014
Here are some drugs forums you may like so you can start posting and reach that oh so mighty bluelighter status
Basic drug discussion-
http://www.bluelight.org/vb/forums/1...rug-Discussion
Other drugs-
http://www.bluelight.org/vb/forums/58-Other-Drugs
Cannabis discussion-
http://www.bluelight.org/vb/forums/7...bis-Discussion
Suboxone mega thread-
http://www.bluelight.org/vb/threads/716293-Suboxone-Buprenorphine-Megathread-and-FAQ-v-18-0/page18
Good luck don't be afraid to ask for help that's what I'm here for,