Can i take .5mg of xanax 3 hours after 2 glasses of champagne? 38 year old female, 5"7" 140lbs

Be cautious: Sedatives and tranquilizers like Xanax do augment the effect of alcohol on your brain. In that sense you need to be cautious, taking half of the usual dose of your sedatives or delaying it till alcohol is out of your body(stays in the body for 4-6 hours)

Not recommended: Using depressants like alcohol and drugs like Xanax can create additive or even in some cases multiplicative effects.