[Allicin (garlic)](https://www.mskcc.org/cancer-care/integrative-medicine/herbs/garlic) Allicin (diallyl thiosulfinate) is the best-known biologically active component in freshly crushed garlic extract. >Furthermore, it was demonstrated that combined use of allicin and rapamycin induced more cancer cell death compared with that induced by allicin or rapamycin alone. >Source: [Allicin activates autophagic cell death to alleviate the malignant development of thyroid cancer - PMC](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5841025/) Aged garlic extract (AGE) increases natural-killer cell activity: >Aged garlic extract (AGE) has manifold biological activities including immunomodulative and antioxidative effects. Advanced-cancer patients decline in immune functions and quality of life (QOL). Although no difference was observed in QOL, both the number of NK cells and the NK cell activity increased significantly in the AGE group. The study showed that administering AGE to patients with advanced cancer of the digestive system improved NK cell activity, but caused no improvement in QOL. >Source: [Aged Garlic Extract Prevents a Decline of NK Cell Number and Activity in Patients with Advanced Cancer | The Journal of Nutrition | Oxford Academic](https://academic.oup.com/jn/article/136/3/816S/4664387?login=false)