Stop The Falling Of Hair What Can I Do To Stop My Hair From Falling Out So Much?

What can I do to stop my hair from falling out so much? - stop the falling of hair

I'm 23 years for women and their hair is shedding more than usual. What vitamins should I take, what can I stop falling so much.
I take a multivitamin, extra Malcolm "Calum. Vitamin E, Vitamin B complex, iron and folic acid.
Please help me, I am very worried.