News & Media Ketamine offers lifeline for suicidal thoughts Erin Burnett Out Front Dr. Sanjay Gupta shares the story of Alan Ferguson, who is being treated with ketamine, a powerful anesthetic medication used in hospitals, for severe depression. Source: CNN <span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"></span>
