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Description
It affects purity, dosing confidence, expected side effects, and the ability of a physician to monitor outcomes responsibly

doi: 10.1016/S0005-2728(00)00152-3

The best answer might be to be determined. While the direct link between vitamin D constipation effects needs more research, it seems that ensuring adequate levels of vitamin D might help overall gut health and regularity

Pories WJ, Dohm GL

Tegunov, D
