IRCT201507035623N47 IRCT 2015-07-19 Vice chancellor for research, Arak University of Medical Sciences Effect of supplementation in treatment of gestational diabetes Clinical trial of the effect of combined omega-3 and vitamin E supplementation on pregnancy outcomes in gestational diabetes 2015-06-09 anticipated 60 Complete https://irct.ir/trial/6077 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: At study baseline and after stratification for pre-intervention BMI and weeks of gestation, subjects will be randomly divided into two groups to take combined omega-3 and vitamin E supplementation (n = 30) or placebo (n = 30). Randomization will be done by the use of computer-generated random numbers, Blinding description: Participants, investigators or the assessors of the outcomes are unaware of the study groups. Randomization and allocation will be concealed from the researchers and participants until the final analyses are completed. Another person at the gynecology clinic, who is not involved in the trial and not aware of random sequences, will be assigned the participants to the numbered bottles of capsules. Supplements and placebos capsules are similar in shape and size. 3 Gestational diabetes. Intervention 1: Intervention group: Combined omega-3 and vitamin E pearl, 1000 mg omega-3 and 400 IU vitamin E, daily, for 6 weeks orally. Intervention 2: Control group: Placebo pearl, daily, for 6 weeks orally. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is Undecided - It is not yet known if there will be a plan to make this available.