bodys adjustment after methadone...

HI, My question is does anybody know of any OTC supplements, vitamins etc that can be taken to ease the transition when coming off methadone? I've been on methadone for 8 years now, and am finally almost free. I'm on 5 mgs now, but I know the body needs time to re-adjust to not having the drugs. I'm wondering if there's anything i can take to help with effects like lack of energy, some minor muscle fatigue, etc? Thanks for any and all help. Denis