In one answer – “No”.
Although some studies are there which suggest that alternative or complementary therapies, including some herbs, may help patients to cope with the side effects of cancer treatment such as nausea, pain, and fatigue and give a bit relief, but no herbal products have been shown to be effective for treating cancer.
In fact, some herbal products may be harmful when taken during chemotherapy, immunotherapy or radiation therapy because they may interfere with how these treatments work. For example, some studies have shown that Kava kava, an herb that has been used to help with stress and anxiety, may cause liver damage. And St. john, which some people use for depression, may cause certain cancer drugs to not work as well as they should. Cancer patients should talk with their doctor about any complementary and alternative medicine products—including vitamins and herbal supplements—they may be using.
So do not respond and act upon what you see on different social media but always have a double check on scientific reference.
Ref : https://www.cancer.gov/about-cancer/treatment/cam