ABC News | Grapefruit juice shown to boost drug's anti-cancer properties Fox News Sirolimus, a drug typically used by transplant patients to prevent rejection, has been found in previous studies to have anti-cancer properties as well. While it's not currently used to treat cancer, there may be a way to give those properties a boost ... Grapefruit juice lowers dose, cost, of cancer med sirolimus: Study Grapefruit Juice Could Help Cancer Patients Save Money Grapefruit Juice May Give Boost to Cancer Treatment: Study |