You may simply not respond to the supplement. Studies show efficacy in around 60% of women from day 4 against pregnancy nausea, with results showing up to 88% improvement. You may therefore be among the rarer cases. If symptoms worsen or do not improve, please consult a healthcare professional. They may recommend seeing a specialist for acupuncture, for example, which can be beneficial. To find out more about all the benefits of this practice, read our article on acupuncture during pregnancy.