Was there something that happened two years ago that triggered your anxiety attacks again...major life change, traumatic event, loss of loved one, health issues? Sometimes it helps if you can nail down what your triggers are so you can better understand your anxiety and learn how to cope with it.
More than likely you will never rid yourself completely, but you can learn to live with it and accept that it's going to be along for the ride. I would urge you not to fight it when you feel symptoms coming on, that may only heighten your anxiety. Instead, once you feel the physical symptoms of an attack, talk yourself through, remind yourself that this is only a panic attack and that you've been there before. It's familiar territory...it's not a heart attack, stroke, tumor, and you aren't dying. Take some slow, deep breaths, and think of your anxiety as something separate outside your body. Let's call it a gremlin.
So there it is, tapping you on the shoulder, reminding you that it's time to worry for no appartent reason. The more you try to ignore it, the more it tries to convince you it's time to panic. Don't ignore it, acknowledge it is there, and continue to live your life. You still have a choice to either curl up in a hysterical ball, or give yourself a few minutes to coach yourself through and continue with whatever you were doing. It's not going anywhere, but you don't have to give in to it either. Accept that it will just be along for the ride but you can still live a normal and productive life.
As scary as the listed side effects are you have to try and ignore them. It's a shame that all we ever hear about are the negative experiences with medication because the good stories far outweigh the bad. You also have to realize that anxiety is like any other medical condition requiring medication to control the symptoms. If you were diagnosed with Diabetes you wouldn't think twice about taking the needed medication and anxiety is no different. Medication has given so many of us our lives back and you deserve the same. You will never know until you try and right now you're in limbo with this anxiety. You have a chance to feel better and truly owe it to yourself to at least try. Keep in mind that if one person in a million suffers a side effect the drug companies have to list it, but the chances of you having the same is almost nil. You're stronger than the anxiety....take the increased dosage and get your life back. I hope this helps and best wishes!