Zoloft (sertraline) is a drug used for treating depression, how to buy norvasc no prescription anxiety and obsessive compulsive disorder. Launched in 1992 it has since been used in over 10.2 billion patient days of therapy. In clinical trials, 50% of patients taking sertraline showed signs of improvement as opposed how to buy norvasc no prescription a typical placebo response of 32% (mulrow).