question: Hello DR My mother is 82yrs .Last fifteen days she is feeling acute pain in her left leg from thie to toe .From friday 4th July Dr has prescribed PREGALIN X 75 twice a day with Anaflan.Taking PREGALIN she is feeling drowsiness and uneasyness.Is this medicine effect? I also want to know this side effects.I also want to know for what purpose thi medicine used?