Yes, the effects of several supplements on gestational diabetes have been examined, including vitamin D,[1][2] polyphenols,[3] probiotics,[1][4][5] myo-inositol,[1][6] fish oil (including omega-3 fatty acids),[1], etc. Of these, supplementation with vitamin D or myo-inositol during pregnancy may reduce the risk of gestational diabetes [1]. But there is currently no strong evidence to support the use of supplements to treat gestational diabetes.
Have any supplements been studied for gestational diabetes?
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•Last Updated: May 16, 2025
Several supplements — including vitamin D, polyphenols, probiotics, myo-inositol, and fish oil — have been studied for their effects on gestational diabetes. Although vitamin D and myo-inositol may reduce the risk, there is no strong evidence to support the use of supplements in treating gestational diabetes.