Hi djm!
Congratulations!!! You're on your way to becoming a non smoker!!!
The first day is a biggie!!!
The brain fog will be with you for a little while. It should go away after the first week or so. For some it lasted maybe a little longer.
I didn't have the dizziness so I can't help you there. But if it gets too bad, call your doctor!! You may need to reduce your dosage. Same thing with the muscle aches. Call doctor if gets too bad!!! There are some people on here that did cut their dose because of that. Others had to quit taking it completely. So watch that carefully.
Aren't you proud of yourself?!! Should Be!! That is a very big step!!
Keep up the good work.

Please let us know how you are doing!!
Memaw