Three years and a month on it for me. The start was hard, once I reached a 1mg dose, with rough side effects for a few months, then they leveled out. Mostly it was an aversion to smells now and then. Sometimes food smelled weird and I could not eat it. Like being pregnant! I spent two years on 2mg, and they just dropped me to 1 again since my A1C sat too low (4.7, while normal runs 5.5 to 6). After the reduction I feel perfectly normal, side effects gone.