Taking new medications, especially ones that do have known side effects can always be a bit daunting. However, it's important to take it as directed and monitor how you feel on a daily basis. Make sure that you let your doctor know, if you are experiencing any of these side effects.
One thing i wish I knew more about and that I had started to implement earlier is that managing ADHD symptoms goes far beyond simply taking a prescription.
While, prescription medications can and do certainly serve their purposes, it is crucial to recognize the importance of a well-balanced nutritional diet, establishing routines, making certain that you are getting enough sleep, and even trying things to relax the mind, like meditation.
The prescriptions will help address some of the symptoms, trials and tribulations that are associated with ADHD, but managing the disorder as a whole takes work. It takes practice. Simply taking the medications will not "cure" ADHD or it would already be called a cure. However, we CAN manage ADHD.
Discuss these things with your doctor and I believe that as long as you closely monitor taking the new medication, you will not only be fine, but find that certain symptoms are alleviated easier for you.
All the best!