Core tip: Do I need medication to treat morning sickness? Experts believe that the cause of morning sickness may be related to hormonal changes in expectant mothers. Mild morning sickness does not require treatment, but severe morning sickness requires medical advice. To relieve the symptoms of morning sickness, pregnant women should stay comfortable, eat a light diet and exercise moderately. Recently, according to the Associated Press, the German pharmaceutical company Gruenenthal finally bowed its head and apologized to the victims of the drug thalidomide developed by the company 50 years ago. In the 1950s and 1960s, sand