Garlic works... it works in human and animals..been proven in both.
The problem with garlic though is that the cloves have to be freshly broken and the liquid administered since the chemicals that cause garlic to have these marvelous fighting ability loose their potency soon after the clove has been crushed. This is proven people, Garlic has been used to fight off numerous ailments for thousands of years... everything from infections to parasites. There was a study published around 16 years ago that proved fish fed food that had garlic in it had less infections and parasites than the fish that were fed food lacking it.
Now the Garlic liquid in bottles that you buy in the store are junk, it has to be fresh to work in this application; which will not be possible with prepacked liquid.
People that say it doesn't work are just not well informed , or do not know how to correctly administer it.
From Wiki,
"Garlic has been used as both food and medicine in many cultures for thousands of years, dating as far back as the time that the Egyptian pyramids were built. Garlic is claimed to help prevent heart disease including atherosclerosis, high cholesterol, high blood pressure, and cancer.[9]
Animal studies, and some early investigational studies in humans, have suggested possible cardiovascular benefits of garlic"
"In 2007 a BBC news story reported that Allium sativum may have beneficial properties, such as preventing and fighting the common cold.[16] This assertion has the backing of long tradition. Traditional British herbalism used garlic for hoarseness and coughs, both as a syrup and in a salve made of garlic and lard, which was rubbed on the chest and back.[17] The Cherokee also used it as an expectorant for coughs and croup."
"When crushed, Allium sativum yields allicin, a powerful antibiotic and anti-fungal compound (phytoncide). However due to poor bioavailability it is of limited use for oral consumption. It also contains alliin, ajoene, enzymes, vitamin B, minerals, and flavonoids."
"Garlic has been reasonably successfully used in AIDS patients to treat cryptosporidium in an uncontrolled study in China.[26] It has also been used by at least one AIDS patient to treat toxoplasmosis another protozoal disease.[27]"
"In modern naturopathy, garlic is used as a treatment for intestinal worms and other intestinal parasites, both orally and as an anal suppository. Garlic cloves are used as a remedy for infections (especially chest problems), digestive disorders, and fungal infections such as thrush."
Nuff said -- jman77