Has anyone use Eko Garlic shampoo for excessive hair loss? I can’t find many reviews on this product.?

I have been shedding my hair ridiculously lately and read that garlic shampoo may help. But when I used it for the first time today, my hair fell out in chunks, I was so scared, I didn’t know if this was normal or not but I can’t find any reviews on this product… Please Help! I’m seeing my doctor tomorrow but would like some answers and advice today. Thanks