Hello again. Most of the vitamins you are taking are fine except I would be concerned regarding the niacin as this can interact with Risperidone and Trazodone, so in that area you can consider a liver function test if you want to be absolutely reassured. Overall your medication regimen and vitamin supplements appear to be fine with no major worries so you should be able to continue them with no difficulties. Can you tell me the doses of your medications to make sure, but overall I do not think you have anything to worry about regarding your liver and kidneys
For psychotic depression I would recommend trying Lamotrogine as this is an effective mood stabilizer that will not interact with your current medications. Also if the liver function test is normal than yes you can continue with the niacin
I hope this helps to provide you some guidance on this issue. Please let me know if you have any other questions or concerns as I would be happy to continue assisting you regarding this issue.
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