There are three groups into which every medication is categorized:
Group A -> it is certain that it works to treat disease X,
Group B -> it has a related function for the treatment of disease X,
Group C -> although there is little evidence, it is used to treat disease X.
Sometimes a doctor prescribes a medication that is well-known to many people for an action in Group A, but is unknown to many for an action in Group B.
Therefore, a medication indicated for depression can also be used (in this specific case) for obsessive-compulsive disorder, post-traumatic stress disorder, premenstrual dysphoric disorder, panic disorder, dysthymia, social phobia, and social anxiety disorder.
Surely this doctor told you to take this medication for some time and to schedule a follow-up. If this medication does not have the desired effect, they will prescribe another one.
Therefore, you must choose to either follow their recommendations or look for another doctor and get a second opinion.
What you cannot do is go around reading all the nonsense you see out there.
Depression is a disease, just like many others, and it must be treated properly.
