Sunnivara 23 Nov 2010 07:15 pm I've been on 6,000 for quite I've been on 6,000 for quite a while and that doesn't seem to be enough since I'm still struggling to keep my D levels in the 50's. I could probably safely go higher. I've read it's perfectly safe to take 10,000 for a while, until you get your levels up, then find a maintenance dose. What that maintenance dose would be would depend on how easily you got your levels up. Since it's taken me so long to get my levels up I'd imagine my maintenance dose will stay fairly high, 6,000-7,000.