An erection requires a delicate balance of blood flow and blood pressure, along with the interaction of neural and endocrine factors that are beyond my expertise to understand or explain.
Suffice it to say that his ability to perform is driven by a stimulant — you. Alcohol is a depressant that negates your stimulating effect. It doesn’t decrease his desire to make love to you, but it may lower his blood pressure to the point that he is physically unable to “get it up.”
The paradox is that alcohol also decreases our inhibitions, and so increases our desire for sex.
Most erectile enhancing medications are considered to be safe when used with moderate alcohol consumption. The Cialis website says, “Do not drink too much alcohol when taking Cialis (for example, five glasses of wine or five shots of whiskey). Drinking too much alcohol can increase your chances of getting a headache or getting dizzy, increasing your heart rate or lowering your blood pressure.”
If moderate amounts of alcohol are hampering his performance in the bedroom, then you should have him see a doctor for safe alternatives. Of course, he can drink less or just choose between drinking and having sex.
