CBD is known for abating nausea and increasing appetite, which is often why it is prescribed to cancer patients receiving chemotherapy, and can be effective for pregnant women suffering from Hyperemisis Gravidarum on the recommendation of their doctor.
Nausea can be caused by anything from migraines to medications, pancreatitis to pregnancy, and is often completely debilitating for those suffering from it.
While more is known about the physiology of vomiting than of nausea, the key to controlling the symptoms of nausea seems to be through receptors in parts of the brain and in the gastrointestinal tract that produce and bind with serotonin - a neurotransmitter.
CBD interacts with serotonin-releasing receptors, and when taken in relatively small doses it has been shown to block the effects of the serotonin’s release - alleviating both nausea and vomiting.
CBD can also be effective in easing anxiety, which can help patients manage the angst behind chronic nausea.
Read a study on cannabinoids and their effect on nausea.