hominis is parasitic (protozoan) infection.
It requires treatment with anti protozoal drugs such as Iodoquinol or Nitazoxanide along with Metronidazole
You have also mentioned that you are having this parasite since August 2012.
So...instead of trying different conventional & non conventional medications, it will be better to consult a Gastroenterologist
& start proper treatment.
Other than that, maintain proper hygiene, adequate hydration & take soft, non-spicy foods.
Wishing you a Good Health. Let me know if I need to clarify further.
Thanks & take care.