DAP might work, it isn't as affective as diazapam, but it should help your lab to feel more calm. All it does is to release calming pheramones into the area. It usually works better with something like seperation problems. It is a good product and does what the label says, but it won't make your dog enjoy fireworks. It may allow you to lower the dose of diazepam given. Is in the side effects that you are worried about, or is it the fact that is makes him or her unable to undergo natural anti-anxiety habits? Side effects are mininmal if not given frequently. As for her normal habits the correct dose should allow her to not process the scarey sounds as well so the will be calmer. It also acts as a depressant so she can't hurt herself. Can you put her in a quieter room like a basement with a radio? That may take some of the edge off, but not always. I like DAP personally, i think the thought behind it is good; but it isn't the be all end all.