Hello friend,
Giardia do not infest your body unconditionally. Your immunity became low just prior to the symptoms which later was diagnosed as giardiasis. What is required is a treatment that will improve your immunity. I can suggest Homoeopathy for that. Homoeopathy takes into consideration, your constitution and its genetic features as very important pointers to select a remedy that will improve your immunity. If you can get back to me with more details about your constitution, as manifested through your physical and mental general symptoms, I can suggest your constitutional remedy that will cure you. Your life situations and your reactions to them are important.
With Best Wishes,
Dr C. J. Varghese,,
drcjvarghese@gmail.com

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1.Avoid: milk,jaggery,ghee,sugar,leafy vegetables,meat,cucumber,raw fruits,potato,sweets,sour food/fruits.
2.Take: bitter,astringent food,almonds,add salt + eating soda to flour: make chapati/roti from it and eat, consume chutney made from mint and ginger.
3. make pill after mixing garlic and jaggery in equal amount, and take 10 gm in morning (empty stomach) for three days.
4. take equal amount of dry cover of tangerine and embelia ribes seeds (vaividang) and make fine powder of both,take 3 gm of this powder (for 3 days) with luke warm water resulting in death of parasite , after 3rd day give castor oil to drink resulting in evacuation of dead parasites.

Dear
Kutaj is the main anti amoebic medicine. Giardiasis in many cases offers variety of symptoms. You will have to be regular with diet by having proper meals at proper time. Avoid stale and fast food. Take care of lacto bacillus also as many anti amoebic medicines disturb the flora which further leads to impaired digestion.
I would advise you to go ahead with Tab. amoebica, tab chitrak adi vati and kam dughda ras to check your cramps etc.