I'd be surprised if a significant number of antidepressants had those kinds of warnings, too. However, I guess some of them might. For example mirtazapine (Rem

I'd be surprised if a significant number of antidepressants had those kinds of warnings, too. However, I guess some of them might. For example mirtazapine (Remeron) can apparently cause sleepiness in some cases, and in low doses it's even used for insomnia. AFAIK in the higher doses used for depression it shouldn't cause sleepiness as easily, though, and I don't know if it comes with a warnings label. Considering the number of people on various kinds of antidepressants, the total number of people using some kind of a rarely used antidepressant that might have different side effects than the more common ones is probably also non-negligible. Although a confusion between antidepressants and benzodiazepines or other anxiolytics may be more likely.