Take caution with clenbuterol. Yes it is technically a psychoactive drug (having central activity; CNS stimulation), but is very rarely used as a CNS stimulant due to its laundry list of side-effects, toxicities, narrow therapeutic index etc.
Furthermore, this compound is highly potent, dosed in the micrograms, and under NO circumstances should one handle the pure compound in non-laboratory settings, without a full face respirator, etc, etc. I believe it is at least considered a PG-III - aka UN class 6.1(b) toxic compound - and inhalation of the powder is a recipe for a fatal AMI (acute "heart-attack"). Even with therapeutic doses patients can develop SAS (subaortic coarctation, or perhaps coarctation of the aorta itself), which basically translates into; cardiotoxicity - bad for your heart.
Clenbuterol has legitimate uses in medicine (and for most cases, better alternatives), and possess somewhat less legitimate uses as an ergogenic-performance enhance; however usage for the sole purpose of CNS stimulation is RARELY seen. CNS-stimulation is a side-effect of this drug, is of low/unpleasant quality, and is not safe for this purpose (nor desirable). As far as I know, it has no "anti-depressant" properties; in fact i'd go as far as to say that it likely has opposite effect.
Again, I don't really understand what you are trying to ask here, but once again, I'd have to recommend modafinil.