Top foods that are high in vitamin B15 include: brewer's yeast, sesame and pumpkin seeds, whole-grain brown rice, grains What do we need vitamin B15 for? it boosts your immune system it protects liver against cirrhosis it lowers blood cholesterol levels it prolongs life it reduces alcohol cravings it reduces asthma symptoms it accelarates recovery after a physical performance it protects the organism against pollutants