It would be great, but boosting your nutrient intake won't cause your cells to produce extra energy or more brain power. Only three nutrients carbohydrates, fats, and proteins supply energy or calories to grow taller. Vitamins don't. Although B vitamins do help body cells produce energy from the three energy nutrients, they don't produce energy themselves. Many powerful drugs and toxic chemicals are plant-based. Varieties of mushrooms can be classified as "culinary delicious" or "deadly dangerous." In the same vein, herbal supplements should be used with caution!