Does Rogaine Foam really work for alopecia areata?

My pre-existing alopecia areata has worsened after taking Moutar, so I intend to seek active treatment. I know there are various hair loss treatments available for women with alopecia areata, but I am curious about the actual effectiveness of Rogaine Foam, which is frequently advertised. For those who have actually used Rogaine Foam for female alopecia areata, what kind of results have you experienced? Also, can Rogaine Foam be purchased at a pharmacy without a prescription? What dosage and method of use should I follow to achieve the best results for my hair loss.