Final answer:
One potent antiemetic for severe intractable vomiting is Zofran (ondansetron), particularly the 4 mg intravenous injection. Scopolamine via transdermal patch is common for motion sickness, while dimenhydrinate (Dramamine) is an alternative antihistamine option. Phenothiazines like chlorpromazine also serve as antiemetics.
Step-by-step explanation:
For severe intractable vomiting, one potent antiemetic used is Zofran (ondansetron), specifically Zofran 4 mg for intravenous injection. Ondansetron is particularly effective in preventing nausea and vomiting caused by cancer chemotherapy, radiation therapy, or surgery. For motion sickness, which can often present with nausea and vomiting, scopolamine is a common choice, available in the form of a transdermal patch. Although at high doses it can be toxic, the patch releases the medication at a controlled, low concentration. An alternative to scopolamine for patients concerned about its potential dangers is the antihistamine dimenhydrinate (Dramamine). In addition to these specific antiemetics, phenothiazines such as chlorpromazine have a broad range of uses, including capabilities as antiemetics and antinausea medications.