Acomplia (rimonabant, manufactured by Sanofi-Aventis) is an anti-obesity drug that was supposed to be a big hit in the U.S. However, earlier this year, U.S. FDA decided not to approve the drug here in the states because the drug was found to increase suicidal thoughts and depression. Acomplia is, however, approved and available in Europe. This week, medical journal The Lancet published a review of clinical trials involving Acomplia to look at the safety and efficacy of this drug.

According to the review analysis (a meta analysis) of 4 past clinical trials involving a total of over 4100 patients, Acomplia reduced more weight after 1 year of treatment than placebo. However, patients taking Acomplia were more than twice as likely as patients taking placebo to stop treatment because of depression. More anxiety was also seen in the Acomplia treatment group than in placebo. Even though patients with a history or risk of depressive mood were excluded from clinical trials, the observation that depression and anxiety still arose when Acomplia was taken suggests that the drug increases the risk of depression of anxiety. The study researchers suggest that doctors should monitor patients taking Acomplia for these serious psychiatric side effects. Also reported by Reuters.