Psych has prescribed d3 5,000 iu, b12 500 mcg & rhodiola 400/600 mgs daily for depression.i also take simvastatin and levothyroxine.is it ok to take ?

Snake oil: Hi. Vitamin D3 is awesome for vitamin D deficiency, and oral vitamin B12 is awesome for vitamin B12 deficiency that is not due to pernicious anemia (autoimmune B12 defic.), but they are not a treatment for depression. There are no scientific data to support rhodiola for depression. They're all very nice placebo for depression. At least simvastatin and l-thyroxine are being used for real reasons(?)