Treatment for Hair Loss in Middle-Aged Woman

My 54-year-old mother has been experiencing hair loss, which she believes is one of the menopause symptoms. She is worried about this and sought a doctor’s advice. The doctor recommended minoxidil. My mother had a reaction and hasn’t been able to use it again. She has researched another medication called Provillus. Can you give us some more information on this? Can you recommend any other alternatives for preventing hair loss?