Hey Sburn and welcome - I was working for super large major company, also Fortune 50 - usually they are a bit more understanding with things like this. If you can, take a bit of personal time to adjust to the meds - either sick or short term disability (I'm guessing you are in the US) You wouldn't believe who else around you is also dx with these types of things - i know at my old job one girl with BP just got promoted again...get used to your meds and adjust your life and schedule to work for you.
Feel free to PM me if you need to talk.