Tesofensine is an antidepressant with weight loss effects that can be purchased online without a prescription for research purposes.
It's fairly expensive, usually running about $250 for a one month supply, but if you need a temporary break from your depression then it might work for you.
However, because it is a research chemical, all of the side effects of the chemical are not known and you would be taking a risk in using it even for a short period of time.
Chances are it is likely safe but there is still a risk and you have to weigh that against your mental health and your finances and the costs and difficulty associated with getting put on a traditional antidepressant prescribed to you by a competent doctor.