I am suffering from htn, dm-2 and bipolar disorder for rhe last about 10 yrs. I am a male of 62 years age .in addition to medicines for the above conditions I am taking following supplements for the past many years :- 1 multivitamin supradyn 1 od 2 evion400 1 od 3 vitamin c 500 mg 1 od 4 calcium 500 mg 1 od 5 seven seas cod liver oil capsules 2 bd my question is does taking these vitamins offer any benefits? Are their any harms in taking these supplements? Should I continue to take these supplements for thw rest of my life? Can taking so many medicines and supplements put unnecessary burden on the kidneys? These supplements have not been prescribed by the Dr. I am taking these on my own. Please reply in detail and advise.