I've had a fungul infection in two of my finger nails for a few years and have been back to the doctors recently to see if there was anything more they could prescribe or recommend.
My doctors don't prescribe the over the counter medication due to side effects or the paint on treatments, so was looking for an alternative and stumbled across the OPI fungus fix and thought it was a good price.
I have already seen a difference in my nails, with the infection not looking so prominent, howver I've only been using it for a week, so think it could take a little while for the nail bed to fully recover.
The only negative comment I would have to pass on is that if anyone is going to purchase it from this seller, make sure that you are going to be in receive the parcel or have it delivered to alternative address, as I ended up having to pay an additional 70p to have it re-directed to my local Post Office as although the actual product is just a small box, it was also put in another much bigger box which wouldn't fit through a letter box - a complete waste of packaging!