Musk Touts Ketamine's Benefits for His Depression, Worrying Some Executives

• Musk says taking prescription ketamine helps treat his depression and has benefited investors • He claims taking small doses every few weeks helps with "chemical tides" that cause depressive episodes • Musk suggests it helps him execute and create shareholder value at Tesla and SpaceX • Some executives have expressed concern over his ketamine use impacting his work • Musk previously criticized the antidepressant Wellbutrin, despite experts defending its efficacy