I can point you to
this study.
Here's a study on patients recieving Tianeptine treatment for 16.5 months.
Personally my theory is, that to achieve full benefits it would be wise to take it for the long-term.
I myself will evaluate it's effects after a month, and decide accordingly whether or not to stick with it.
If I do decide to continue use, I will use it
for a year, then take a 3 month break to evaluate possible relapse. If no such thing occurs, I will refrain from using it, and else continue treatment for another year. Manic_racetam has a
post on his personal 14-month trial.
Tianeptine seems to be extremely safe for prolonged use, I'd say you needn't worry about it.
Depending on your situation, asses for yourself what would be a wise course of treatment. For severe depression, I'd say at least a year. For moderate 6-9 months, for light 3-6. But it can all differ for you personally. Ohh, scrap that, of course what I meant to say was: discuss treatment options with your doctor etc. etc.
Good luck!
Edited by formergenius, 17 February 2013 - 11:14 AM.