• Track your drinking patterns. Along with your food diary, keep an alcohol diary to track your true drinking patterns. One drink equals 12 ounces (355 milliliters, or mL) of beer, 5 ounces of wine (148 mL) or 1.5 ounces of 80-proof liquor (45 mL). If you're drinking more than the suggested amounts, cut back.
  • Consider tapering off. If you're a heavy drinker, suddenly eliminating all alcohol can actually trigger severe high blood pressure for several days. So when you stop drinking, do it with the supervision of your doctor or taper off slowly, over one to two weeks.
  • Don't binge. Binge drinking -- having four or more drinks in a row -- can cause large and sudden increases in blood pressure, in addition to other health problems.

Source: http://www.mayoclinic.org/diseases-conditions/high-blood-pressure/in-depth/high-blood-pressure/ART-20046974/