Combinations - What will happen- Lorazepam & Concerta?

[devilsdandruff_ftw]

SWIM takes the lowest dose of Concerta there is, but wants to take one Lorazepam and is nervous about what will happen. SWIM has heard that you shouldn't drink, smoke, or take any other type of pill while on Concerta but that was from people trying to keep SWIM off of drugs. Some of SWIMs friends said it would be okay and that nothing would happen. So basically SWIM asked if they took a Lorazepam, while drinking some Vodka and on the lowest dose of Concerta if they would be okay. And what some side affects may be. Main reason they want to take the Lorazepam is to calm themself down because of high anxiety. I put this in this forum because it mainly has to do with Lorazepam, and wasn't too sure whether I should classify this under Concerta and Ritalin.
Help for SWIM would be great, thanks!