After I limped home, I Google groin injuries and found your product. i ordered it express and used the herbal patch on my injured area. It felt much better after 2 days. I was on crutches in the beginning, and was able to get rid of them within the week. I have also used the patch on an injured ankle, with much success. And I ordered more when my grandson injured his shoulder. He used it and it helped him. And this year, I had a tenant snowboard coach who also injured his shoulder during the sport. I brought him what was left from the prior purchase and he used it with good success. he was back out on the snow in a few days.