There is not much difference between lozenges and gums in terms of contents. The only difference is in how you consume it. It is not possible to say that one is better than the other. Nicotine chewing gums gives the mouth something to do. Some people will find it as a helpful distraction from the craving to smoke. But not everybody is a fan of chewing all the time. For them, lozenges are a convenient replacement for chewing gums. Another problem with chewing gums is the action of chewing itself. Because the jaws and teeth will be working a lot more than usual, it can lead to temporary fatigue and pain.