In this article, you'll learn about 10 new drugs, including: * nebivolol HCl, the newest beta-adrenergic blocking agent for hypertension * methylnaltrexone bromide, a subcutaneous injection for opioid-induced constipation * alvimopan, a selective mu-opioid receptor antagonist to combat postoperative ileus.Unless otherwise specified, the information in the following summaries applies to adults, not children. Consult the product insert for information about each drug's safety during pregnancy and breast-feeding. Also consult a pharmacist, the product insert, or a comprehensive drug reference for more details on precautions, drug interactions, and adverse reactions for all these drugs.