"It's not magic, " Ecker cautioned, saying few women see their symptoms completely disappear with the medication.

NPR: FDA Approves Return Of Drug For Morning Sickness

When that doesn't work, Ecker says vitamin B6 alone helps some women.

NPR: FDA Approves Return Of Drug For Morning Sickness

The return of an FDA-cleared treatment is needed, said ACOG spokesman Dr. Jeffrey Ecker, an obstetrician at Massachusetts General Hospital who wasn't involved in the study of Diclegis.

NPR: FDA Approves Return Of Drug For Morning Sickness