Vitamin B12 (cobalamin).
Stress is one of the common causes of hair loss. Vitamin B12 is an anti-stress vitamin, which improves the condition of the immune system and it is also a potent hair growth stimulator. It is available in food sources like fish, dairy products, organ meats (the meat found in liver and kidney), eggs, beef, and pork.
PANTOTHENIC ACID (Vitamin B5) Prevents greying and hair loss. Present in whole grain cereals, brewers yeast, organ meat, egg yolk.
Daily dose 4 to7 mg.