Medication??
First congrats on your marathon training! Crossing that finish line of your first marathon is going to change your life forever.
Ice packs should be your best friend right now. Get one for each knee and calf / shin. Ice will help greatly with the discomfort. If you can do without the meds do without them but if you have to take something talk to your doctor and see what he recommends. Some can take asprin / Advil type medications in low doses and some can't. He'll steer you in the right direction.
As everyone else said make sure you are stretching before and after running and don't increase your mileage too fast.
Best of luck!
Chad
5'6" - 302/155-158
Check my success story on my surgeon's website: my story
Check my blog: LosingForLife.com
Ran NYC Marathon 11/4/07 5:27:06
Link to my running journal
http://www.disboards.com/showthread.php?t=1303681
4 full's - 14 halves - 2 goofy's and one Mt. Washington!