It highly depends on what opiate you're withdrawing from and what dose.
.if you've been shooting 20mg of fentanyl a day it's not going to help much... bUT!
Back when I was smoking no.3 H I would take 6-8mg before my withdrawals would kick in and continue to take 4mg every 6-8 hours and 75% of the rattle would be gone!
With benzos and)or pregabalin this would be even better
It's really handy in most cases. You just need to know how to use it.
What are you using and how much and we can tell you how much lope you need to take to help