The only thing I've tried is apple cider vinegar (any vinegar might do the same) and it's working!!! My nail is now half grown out and is fungus-free and looking almost normal again. I've had fungus in this toe for nearly 10 years now. It's taken about 2 months so far, but I've heard it takes at least 3 months for a new nail to grow out.
I apply the ACV with a Q-tip and massage it into the cuticle several times, once a day, usually in the evening when I take my shoes off for the day. I did not want to take any prescription as the side-effects were too serious, ie: liver damage. I don't know if there are any side effects from the product you mentioned.