For people with night lows, taking the Lantus in the morning is the safest way to take this particular type of insulin, for it DOES have a slight peak action about 4 hours after injection, and for people taking it at night, the
peak is while they sleep. If he takes it in the morning, this
peak happens right before lunch, when he is awake, and the total dose peters out while he sleeps so a severe night low is pretty much impossible.