I called my ob and spoke to the nurse and they told me I can take this to help with the itching of my hives I also seen…

I called my ob and spoke to the nurse and they told me I can take this to help with the itching of my hives I also seen on the medications list I have that it is safe too. I take two kinds of vitamins.. one is prenatal for the baby and vitamin d every day, I also take flexeral for my tension headache... question is>>>> need advice