what are the effects of L-theanine when mixed with alcohol/beer.my son drinks beer daily for his anxiety problems,which he has had since childhood.He is 36 yrs old now.I was wondering if he could take L-theanine even though he drinks alcohol.Maybe it could help him cut down or even quit the alcohol.I have tried L-theanine in the past and really do like the effects of it.It helped me feel good overall.