Hi mama! Honestly, I'd check with your OB directly about this kasi bawat doctor has their own protocol, a few of us tried evening primrose pero through oral lang as prescribed ng doctor namin, at honestly mas comfortable kami that way hehe. If your doc recommended 3x a day oral, that's usually the safest route na, kaya maybe clarify with her ulit kung bakit sabi ng iba mas effective ang insert method, baka may specific reason para sa case mo? Wishing you an easy labor, mama!