I'm new. My 16-year-old Himalayan Dusty has been on Lantus since August 2009--1 unit 2 x a day. Due to episodes of possible hypoglycemia in April, my vet had me put him on 1 unit 1 x a day. Then she tried 1-1/2 units 1 x a day. Her curve showed severe lows in the day. Then it was high at night. I've started testing at home (with her blessing). From everything I've read and my history with Dusty and now my testing at home, he needs to be on 2 x a day dosing. Before I talk to my vet, I wanted to post here. He has been on the once daily dosing since early April. Should he return to 1 unit 2 x a day immediately or 1/2 unit 2 x a day for a few days and then 1 unit 2 x a day. Thanks for any help at all.