Hello, Susten is progesterone and is advised during pregnancy when any progesterone insufficiency is suspected as in threatened abortion or polycystic ovarian disease. This is safe in pregnancy. Duvadilan is a uterine relaxant used during mid and late trimesters when uterine irritability is seen. This is not advised during early pregnancy. MCMB is folic acid which is usually given as a vitamin supplement and can be used throughout. Vomikind is Ondansetron which is an anti-emetic used to control vomiting and is not safe in pregnancy. You have done the right thing in taking a second opinion since you are in fetal organogenesis stage and hence cannot afford any risks. Hope this helps.