A completely random search for the word ALCOHOL in French ALCOOL and Lithium on Google yields recommendations to not abuse alcohol, to reduce consumption, to be sure tostay hydrated (which, incidentally, is always a good idea regardless of lithium or alcohol intake), but not complete abstinence.

Just randomly http://agidd-smq.forumactif.com/t161...hium-et-autres

I see one result from Quebec saying EVITER which means to avoid, and others just not to abuse. I have tried restricting my search to France in order to get rid of quebecois results, but it mostly yields pdfs which I cannot access from my phone so this exercise will need to wait.