Zantac, Zoloft, and Zyprexa are just a few of the many medications that begin with the letter Z. While each drug is used to treat different conditions, they all share one common goal: to improve the quality of life for those who take them. Zantac is an antacid that is used to relieve heartburn and indigestion. Zoloft is an antidepressant that is used to treat depression, anxiety, and other mental health disorders. Zyprexa is an antipsychotic medication that is used to treat schizophrenia and bipolar disorder. While each of these drugs has its own unique set of side effects, they all have the potential to improve the lives of those who take them.