I Have Taken Pexep CR25 Mg For 7-8 Months And

I have taken pexep CR25 mg for 7-8 months and now taking pexep 12.5 mg last 3-4 months. I am feeling better now in anxiety case but noticed few more symptoms like behaving as a short temper some time ...is it impact of this pexep ??? how and when i can leave this pexep and how can improve to not go in different cycle like negativity or etc ??