Good to see that you found this website 
I have used topical metronidazole from XFC creme ( http://www.demodexsolutions.com/xin-fumanling-cream.asp?bc=no ), but it didn’t do much. Same for oral doxycycline.
I don’t understand why they give you three products of which one you already tried before, especially because it would be interesting to see what Soolantra could do by itself alone.
It also sounds strange that when a dermatologist prescribes something, the pharmacist is going investigate it.
If you get Soolantra, you may want to try it slowly, because it may cause a bad breakout: Bad first reaction