Hi Soulmate although I can't answer your question I thought I would introduce myself as I am in the exact same boat as you. I was diagnosed in December 2013, but only seen the PD consultant for the first time last Saturday, and have been prescribed the exact same medication as you.
Guess what? I'm bricking it too. Been staring at the pill boxes since Wednesday and haven't started taking them yet. I feel that I just didn't ask enough questions about the meds when I saw the consultant so I have made an appointment to see my GP to go over side effects, driving (during the adjustment period ) etc, just so I know what to expect when I start.
I think the worst part about the meds is just that once you take that first pill thats you for life. Its such a frightening thought that somehow makes the condition more real.
I am 42 with a wife and 2 teenagers and can't believe I have this condition at my age, but hey at least it can be treated and I'm not dead.
It would be great to keep in touch especially over the coming weeks. Perhaps we can keep each other posted on our progress (good days and bad) with the meds. Its good to know that your not alone and its good to speak to someone away from the immediate family with whom you can be honest without thinking that you are worrying your (all ready worried) family members.
Take care and keep in touch