I had giardia and I want to encourage all who have it: it is possible to get rid of it by natural remedies. It may take a long time, several months, but it is possible:
After doing a research on this website and internet I decided not to take Flagyl or Metrinazol or any other pharmaceuticals. At first I tried Hulda Clark anti-parasite treatment. I think it did not work for me completely. Then I took Allicin garlic capsules (6 a day) for 3 months. It definitely helped, but I still got cramps occasionally, my stool was not as it had been before and felt that I still had it inside me.
Then I started to take oregano oil (oregano oil with 80% carvacol, bought it on the internet). Make sure it is pure organic oil. I also bought empty capsules in a pharmacy. I filled the capsule with coconut or flax seed oil by half, then put 2-3 drops of oregano oil - you may start with one drop, as it is very strong), closed the capsule, swallowed and drank one full glass of water. The capsule will melt in your stomach or even in your colon a do the job. Take 3 capsules a day, preferably on an empty stomach. You may need to do this for at least a month and then you will see if it works for you.
I also stopped eating dairy products (milk, cheese, cream, yogurt), cut on starches and hardly any sugar for at least a month, and I ate a lot of raw vegetables, drank a lot of herb tea and water. And also I drank fresh green vegie juices.
I have been told by a hemotologist that oil of oregano kills liver flukes. Hope it helps.
I've used Oil of Oregano for mouth infections, to help cleanse intestinal parasites, as well as ward off yeast infections. I use the liquid form which tastes really bad and burns. Finally I got smart and now buy empty capsules from the health food store and put 2-3 drops in a capsule. Now I get the full benefits without the awful taste. I also brush my teeth with it sometimes and still use it as a rinse if my mouth or gums are sore (I dilute with warm water). I always keep a bottle handy.