He uses two types of insulin' Humalog and Lantus. Humalog is a short acting one that he injects just before each meal and it peaks after about fifteen or twenty minutes. Lantus is the long-acting or background insulin that he injects once a day before bedtime. Before Lantus he used to use Humulin I and it was changed because doctors thought it would suit him better. Lantus has improved his overall control and he doesn't experience low blood sugar levels in the mornings as he did before. To him the only problem with Lantus is the disposable pens which he thinks are rubbish!