Arginine and Ornithine (sp?) are amino acids and they help to remove ammonia from the body from the breakdown of toxins (I think). Ornithine is best taken at night as it helps you sleep, and Arginine is best taken during the day as it makes you mentally brighter and more awake.
Re: your parasite cleanse.
I don't know what it is you're passing, but the diarrhoea from the Liver Flush should have stopped by now (how much Epsom Salts did you take?) I took Clark's recommended amount and didn't have diarrhoea after the second morning.
Does your Colon Cleanse contain walnut/wormwood/cloves as these are specifically for killing parasites? I must admit my parasite flushes show nothing in my BM.