Prescription strength is a joke. Or, rather, it is fraud, plain&simple.
Laughed my ass off when dad got a scriipt for prescription-strength Ibuprofen 600mg, at $3 a pop, when Sam's Club or Costco, both 5mi away from his California home, sold 500-pill 200mg packs for like $10.
Basically, if it's the same active ingredient but lower dosage, just use more of it!
...as to fungal sores, I was referring to what the chick in the picture had and what I get. I haven't the faintest idea whether what you've got is herpes, candida, or a myriad other possible pathogens.