11. Nabilone entered the clinic in 1981 as an antiemetic . 12. Any nausea present may also respond to 5HT3 antagonists owing to their antiemetic properties. 13. Antiemetic drugs should be given to awake persons.14. Several other dopamine antagonists are antiemetics used in the treatment of nausea and vomiting. 15. H2 blockers and antiemetics can also be used. 16. Nausea and vomiting are common, and may require domperidone ( an antiemetic ). 17. Patients with multiple alleles tend to be unresponsive to the antiemetic drug and vice versa. 18. It has potent antiemetic effects in animal studies and has been investigated for potential medical use. 19. A variety of antiemetic drugs may be used, including granisetron, ondansetron, metoclopramide and cyclizine. 20. Other anti-dopaminergic drugs, like the antiemetic metoclopramide, can also result in extrapyramidal side effects.