Extreme morning sickness

Amy • Mom to 4 beautiful girls. 3/3/10, 4/27/14, 4/8/17, 3/7/19.
Posting for a friend, she's on her 3rd pregnancy and she's suffering from extreme morning sickness (all day sickness) to the point where she's vomiting 5 times a day. She's tried 3 different medications with the doc. The one she's on now is slightly helping, she's only puking 2-3 times a day now, but my heart aches for her. Does anybody know of some ways to help her?