The problem is the treatment has to be cost effective. The majority here cannot take colostrum for 2 years just to experience 3% improvement.
I gave up with natural health products because I have tried them and they have no to little effetc EXCEPT few.
Plus the many scams that are on line. Everyone is trying to sell to everyone anything.
Essential oils won't work for exemple because they cannot reach the MIC of protozoa without reaching the human toxicity levels. So all products of essential oils with the claim that they work systemicaly are scams.
I think the only solution is a pharmaceutical antimiocrobials or a product that has been studied to be effective against protozoa.