I went on subs via methadone detox and a two day wait. They started me w 4 and I was good (3-4 bun a day habit previously..for 4 years straight). Recently after tapering down to 8mg from 16mg (stopped heroin 20 months ago), I fucked up and used. I used 3 times over a period of 3 days. I decided to catch this early and go back to subs (a drug is a drug but at least subs I can live a normal life). I waited about 18 hours from my last shot of dope and took 2mg of sub. WD wise I was in diahrrea mode, runny nose, dilated pupils w the hot/colds etc. was tolerable but unpleasant (I.e. I could have and SHOULD have waited longer) . 24 hours is ideal they say. Within 20 min of my sub dose I went into straight precipitated withdrawal and wanted to pull my eyeballs out and skin myself. Tried copping more D but no luck with such. Somehow after about an hour and change, it became tolerable again. No RLS or flip flopping in bed just felt crappy (a blessing over straight precip WD). Took another 2mg about 2 hours later and started to feel better, still weird but I'll take weird over that shit. Point is , you'll be okay. It's the worst but i promise it's temporary probably shorter than you think! Getting off SUBS..now that's a whole other beast but supposedly it can be done right , ain't been there yet so can't share on it. Good luck to anyone struggling with this shit, hall are some tough motherfuckers whether you see it or not and can do so much good once overcoming this. Tough it out, god willing you won't regret it. Easier said than done bc if my dealer picked up I would have used.