The gynecologist told me to drink Si larsil throughout my pregnancy. I…

The gynecologist told me to drink Si larsil throughout my pregnancy. I have no indications for it, and in the internet they write that it is a drug for the liver. Who was prescribed it? Now I am rapidly gaining weight, she says because I don't drink Si larsil, how is this related? P.S. I know that she is a pharmaceutical representative of this drug.