I have been on zoloft for about 9 years.I am 21. I have had few side effects but nothing compared to other antidepressant medicine. About 5 months ago my husband started to take zololft and it has helped a lot but about a month ago he started to drink red bull and he says it seems like it make the zoloft work better. Should this be a concern. Could red bull be bad with Zoloft.help.