Cimetidine (H2 Antihistamines)
[First gen histamine H2 receptor antagonist that inhibits stomach acid production. Has direct anti-proliferative effects on cancer cells, inhibits cell adhesion, reduces tumour angiogenesis (growth of blood vessels essential to a developing tumour) and also boosts anti-cancer immunity in various cancers.] ( link ) Cimetidine Life Extension report (excellent!): https://www.lifeextension.com/magazine/2007/5/report_cimetidine Cimetidine Anti Cancer Drug Reverses Tumor Immunity https://jeffreydachmd.com/cimetidine-anti-cancer-drug-reverses-tumor-immunity/ High-dose cimetidine for the treatment of metastatic renal cell carcinoma. A Hoosier Oncology Group study. The Hoosier Oncology Group evaluated cimetidine in 42 patients with metastatic renal cell carcinoma. There were two complete remissions that lasted for 26 and 33+ months in 38 evaluable patients. There were no partial remissions. Toxicity was minimal. Patients with renal cell carcinoma can occasionally respond to cimetidine wit...