122mg is around 6.9 mmol - if thats the highest youre going then that is within the target range, much above that is higher than you want
Diamicron is another name for GlicliZide and like many drugs it has a cummulative effect and does not immediately clear from or reach therapeutic levels in the body. For this reason, the dose is normally only built up or withdrawn very slowly (called titrating the dose). keep a close eye on your sugars over the next week or so