High-dose vitamin B3 is showing encouraging early results as an addition to standard treatment for glioblastoma, one of the deadliest forms of brain cancer. In a small trial, 82% of patients who received the vitamin, also known as niacin, remained progression-free after six months, according to researchers. The findings point to a potential new way to support the immune system in patients whose defenses are weakened by the tumor.
Glioblastoma is an aggressive cancer with few effective long-term treatments. Standard care typically involves surgery, radiation, and chemotherapy, but the cancer often returns quickly. The new research suggests that high doses of vitamin B3 may help revive immune cells that the tumor suppresses, giving the body a better chance to fight the disease alongside conventional therapy.
The trial was small, and researchers caution that larger studies are needed to confirm both the benefit and the safety of using niacin at high doses. Vitamin B3 is commonly found in foods and supplements at lower levels, but the doses used in this study were significantly higher and should not be attempted without medical supervision. The team believes the vitamin works by restoring the function of immune cells that become exhausted in the presence of glioblastoma.
If the results hold up in further testing, high-dose niacin could become a low-cost, widely available addition to existing treatment regimens. However, experts not involved in the study note that glioblastoma has resisted many promising therapies in the past, and it remains to be seen whether the progression-free survival seen at six months translates into longer overall survival. The researchers are planning larger trials to answer that question.
For now, the findings offer a glimmer of hope in a field where progress has been slow. The study adds to growing interest in using vitamins and other metabolic agents to boost standard cancer care, rather than replace it. Patients interested in the approach should discuss it with their oncologists, as high-dose niacin can cause side effects and may interact with other treatments.
12
