All these processes divide the raw coal into the following three categories: 1  Clean coal, having ash content approx. 2  Middlings, having ash content approx. 3  Rejects, having ash content approx.
Most people undergoing chemotherapy receive anti-nausea (anti-emetic) medications to prevent nausea and vomiting. These drugs, given alone or in combination, can be taken in pill form or administered through a vein in your arm. Your doctor advises which to use based on the treatment you're receiving. Medications used to prevent nausea and vomiting include: 1  Alprazolam (Niravam, Xanax)  Aprepitant (Emend)
Vitamin B6 is often helpful for moms-to-be with mild to moderate nausea. Antihistamines have also been used to treat nausea and vomiting in pregnancy. Your practitioner may recommend doxylamine, an antihistamine that's available as a sleeping pill under the brand name Unisom Nighttime Sleep-Aid.