PSA spiked after several megadoses of Vitamin C

We are at an awe...My father in law was diagnosed with advanced prostate cancer with full body metastases... he underwent the surgical removal of his testicle and was put on Casodex or hormone suppression therapy...then was tested and his PSA was 1.0 and that was in this past August...

Thinking he would be greatly benefited, we put him on Mega doses of vitamin C therapy...he was started on 25 grams which in a few visits went up to 100 grams, and soon there after he was tested again for his PSA level (now in December) and to our absolutely out most surprise his PSA has sky rocketed to 300 +.

Immediately, everybody faulted the treatment of vitamin C...we consulted the Dr. that gave him the vitamin C as to what was the content of the IVs he shed no clue as he said it was just vitamin C..

So now he is back at the oncologist office which was very crude in terms of presenting us his future expectations and the prospect of chemotherapy as the next option...

Any one could give us some light as to what might have happened here ...is IVs mega doses of vitamin C capable of harm when the cancer is incurable and advenced?

Is vitamin C some how to blame for the sky rocketing PSA level of advanced prostate cancer patients??

Has anyone heard that vitamin c be dangerous to advanced cancer patients of any one can give us some clue here??

Is Vitamin C to be blamed for the increased in PSA

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