It's definitely under 10 minutes. Usually when I get raised, I go for a smoke and it's gone by the time I get back. I can easily drag back 2 cigarettes in 10 minutes. I'm lucky to get a smoke, a pee, and a coffee in before I'm unweakened and rested to full HP (and MP if applicable. Which it is on my SAM, since I have capped MP merits and walmart turban, giving me more MP than most Galka plds.)