Two weeks before surgery:
STOP taking herbal megavitamins or weight loss products

One week before surgery:
STOP taking aspirin, ibuprofen or similar medications

24 hours before surgery:
STOP using alcohol or recreational drugs
STOP taking Glucophage or Glucovance

8 hours before surgery:
STOP eating or drinking
STOP smoking or chewing tobacco

The morning of surgery:
TAKE your usual blood pressure, breathing, seizure and heart medications with a small sip of water 
(if okayed by your doctor)
DO NOT TAKE diuretics (water pills) or antacids (Maalox, Tums)