Clearing up the misinformation posted by shrimpy

here are some allopathic studies showing allicin's effectiveness against e histolytica

http://www.ncbi.nlm.nih.gov/pubmed/10594976


Abstract

Allicin, one of the active principles of freshly crushed garlic homogenates, has a variety of antimicrobial activities. Allicin in its pure form was found to exhibit i) antibacterial activity against a wide range of Gram-negative and Gram-positive bacteria, including multidrug-resistant enterotoxicogenic strains of Escherichia coli; ii) antifungal activity, particularly against Candida albicans; iii) antiparasitic activity, including some major human intestinal protozoan parasites such as Entamoeba histolytica and Giardia lamblia; and iv) antiviral activity. The main antimicrobial effect of allicin is due to its chemical reaction with thiol groups of various enzymes, e.g. alcohol dehydrogenase, thioredoxin reductase, and RNA polymerase, which can affect essential metabolism of cysteine proteinase activity involved in the virulence of E. histolytica.

http://www.ncbi.nlm.nih.gov/pubmed/9333064


Abstract

The ability of Entamoeba histolytica trophozoites to destroy monolayers of baby hamster kidney cells is inhibited by allicin, one of the active principles of garlic. Cysteine proteinases, an important contributor to amebic virulence, as well as alcohol dehydrogenase, are strongly inhibited by allicin.

http://www.ncbi.nlm.nih.gov/pubmed/2885381


Inhibition of growth of Entamoeba histolytica by allicin, the active principle of garlic extract (Allium sativum).

of course everyone's immune system is different, and allicin may not knock the infection out in some people.