Excess vomiting

Patient: I am 23 weeks pregnant, and i am alpha thalesemia minor. I have been advised to take Livogen Z for iron, which has folic acid as well.Whenever I take this tablet, I do excess vomiting, due to which whatever I eat, comes out, and nutrients are not retained. I discontinued this tablet for couple of days, I was fine, however nails of my toes, started turning purple, due to less oxygen supply, so I again took this tablet, but again this cycle of excess vomiting started.kindly advise. Also suggest some alternate iron medicine. I am also taking corcium 225 mg teice a day for calcium.

Symptoms: excess vomiting