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PC-SPES was devised and patented by Sophie Chen in the 1990s. The formulation was patented and the drug manufactured and sitributed by a
Californian company, BotanicLab.
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PDQ Integrative, Alternative, and
Complementary Therapies Editorial Board (22 November 2004). "PC-SPES (PDQ®): Health Professional Version".
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of PC-SPES appeared to show it had some effect on human hormones, but it was discovered the PC-SPES had been adulterated with
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There is no good evidence it is of any benefit as a cancer treatment.
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supplement made from multiple herbs and marketed as a treatment for
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chemicals, which were likely the cause of these effects.
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120:"The Rise and Fall of PC-SPES and Its Marketers"
81:List of unproven and disproven cancer treatments
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