Google should provide you with a list of the most normal side effects. For me, the weirdest side effect is it will sometimes reeeally mess with my senses. It will feel like my brain is out of sync with my eyes. Sometimes my lips tingle. Super weird! Not sure if it's dangerous. I think I've talked to my doc abt it and she wasn't concerned. But that is something to be aware of if you're just starting or increasing your dose. It happens to me most often when I take it on an empty or near empty stomach or if I took multiple doses too close together (I take 5mg 3 times per day).