Alcohol. The great social lubricant. Whether it’s a fancy get together, a wild college party, or just a dinner with your partner, alcohol has a way of getting people to loosen up and get out there. While many men simply use alcohol as a way to get themselves talking at social gatherings, many men find themselves arm in arm with a pretty person after a few drinks, whispering about where they should go next. And while men want these spontaneous, sexually-charged conversations to move into immediate sex, many men have erectile dysfunction to worry about. Which begs the question: “If I’ve been drinking, is it safe for me to take Viagra?”

Unfortunately for Viagra-reliant men that enjoy a few libations before knocking boots, the answer is a resounding “No.”

Like many things in life, Viagra and alcohol just don’t mix. The reason is simple: Both Viagra and alcohol affect your blood pressure, albeit with different end results. When you use both Viagra and alcohol, your blood pressure can drop to dangerous levels, which can cause dizziness, headaches, light-headedness, fainting, or, in worst-case scenarios, heart palpitations that can turn deadly.

In addition to potentially putting your body at risk, Viagra and alcohol don’t work together for one simple reason: Combined, they do not improve your sexual performance. Whether you’re seeing double, or fighting off the light-headedness feelings of taking Viagra after a swig of beer, you’re likely going to struggle to focus on the task at hand, leading to issues achieving an erection and getting down to business.

That’s not to say that alcohol should be avoided at all cost when using Viagra; rather, enjoy alcohol in moderation, and make sure you flush your body of the booze before you pop a Viagra. If you don’t, you could be putting your body, and your sex life, at risk.