Is Viibryd working for me?

Hi, Ive been on this for I think two years its the best Ive taken besides Zoloft. Ive been dealing with alot over the past several months and its been hard for me to tell if its working as it should but I think its doing the best it can. Im on the highest dosage (40mg). I recently found out it needs to be taken with food in order to be absorbed properly (not all antidepressants need this).