Vitamin B6 - pyridoxine
B6 represents a group of several compounds that play an important role in energy metabolism (especially protein metabolism). The most active form of which is pyridoxal 5’-phosphate (P5P), which is the form found in animal products. B6 insufficiency is relatively common, with some symptoms including poor sleep, poor mood, numbness and tingling, and anemia. Certain conditions (inflammation, certain drugs, etc) can increase needs for B6. Checking your status is a good way to know where you stand.
Vitamin B5 - Pantothenic acid
Pantothenic acid—B5—is everywhere. That doesn’t mean it isn’t important, and while deficiency is rare, it isn’t impossible. Minimally processed foods are great sources, and it is safe to supplement if needed. If you have any signs that could be linked to deficiency (fatigue, irritability, numbness and tingling, etc) it may be worth checking your levels, or just trying to make sure you are getting enough in your diet (maybe by adding a few teaspoons of nutritional yeast to your salad).
Vitamin B1 - Thiamin
Thiamine, or vitamin B1, is the first of eight B vitamins. It is involved in burning carbohydrates (more so than any other vitamin), making ATP, supporting mitochondria, and supporting the heart and nervous system. Deficiency may be more common than we think. Thiamin can be found in high concentrations in nutritional yeast, legumes, and whole grains, and can be safely supplemented (usually in doses between 10 and 100 mg).