Lisa is 29 years old and is 10 weeks pregnant with her first baby. She attends the GP surgery as she is struggling with nausea and vomiting for the last 2 weeks. She has tried various measures such as ginger, small bland meals and drinking fluids little and often. However, she is still finding it very hard to tolerate full meals but is snacking during the day and has little energy sometimes as a result. She is passing urine well despite vomiting around 5 times daily and has been unable to work as a hairdresser. There is no abdominal pain, dysuria, or fever. She is very keen to try some medication. Past medical history is unremarkable.
On examination her observations are 108/80, pulse 82 bpm, respiratory rate 14 breaths/min and temperature 37.1°C. Urine dip is unremarkable.
What would be the best management option?