Updated Jan 07, 2021 | 10:46 IST Antibiotics are not necessary for patients after most routine endoscopic sinus surgeries despite the common practice to prescribe them, according to a team led by researchers at Massachusetts Eye and Ear. Antibiotics not needed after most sinus surgeries | Photo Credits: Pixabay  Boston: A randomized controlled trial held by Massachusetts Eye and Ear hospital studied the difference in infection rates of 'sinus' and discovered that antibiotics increased gastrointestinal side effects in various patients. Antibiotics are not necessary for patients after most routine endoscopic sinus surgeries despite the common practice to prescribe them, according to a team led by researchers at Massachusetts Eye and Ear.