When you take Victoza you should lose at least 1 lb per month or at most 14 lbs of weight over a year.
I lost 14 lbs total over a year of taking Victoza so it can help with weight loss but not a whole lot.
You still need to exercise, eat correctly, watch your calorie intake etc and you'll shed more weight than just using Victoza but Victoza can help with weight loss.