Can alcohol decrease your blood presure?

No. Drinking too much alcohol can raise blood pressure to unhealthy levels. Having more than three drinks in one sitting temporarily increases your blood pressure, but repeated binge drinking can lead to long-term increases. Keep in mind that alcohol contains calories and may contribute to unwanted weight gain - a risk factor for high blood pressure. Also, alcohol can interfere with the effectiveness and increase the side effects of some blood pressure medications. ~Mayo Clinic