Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.
As per the information you have provided your daughter is not suffering from
depression. So there is no point in using
Sertraline and why additional combination of
Trazodone which adds up for lot of sedation. Vyvanse helps to concentrate more but it's temporary and also have addiction potential. One should try to detect the exact reason for her lack of focus. I mean, is it because of
anxiety or bad experience at school/college, sleep disturbance, lack of self confidence, lack of interest towards academics etc. For this, make your child sit with you, give her freedom to express her thoughts, emotions, feelings. Above all as you asked regarding availability of over the counter drugs, Syrup
Piracetam given on long term helps in changing her study pattern by improving blood circulation in micro vasculature of the brain. Morning walk daily and exercising for 2 to 3 days per week also makes her feel much better.
Hope I have answered your query. Let me know if I can assist you further.