Until the 20th century, most women in Thailand, particularly in the rural areas, gave birth at home, so the local midwife played an important role not just during birth, but also during the pregnancy and post-natal period. She would prescribe herbal drugs such as ya hom, fragrant medicine, or a blend of flowers and plants including jasmine, camphor, and ylang-ylang. When inhaled, the scented pellets relieved morning sickness, or nausea. Mixed with water, the tonic alleviated dizziness. At the same time, massage was employed to ease aching limbs. This still goes on today, but should only be performed by a trained masseuse.