malabsorption and weight loss. Vegetative pathogen agent exists in two forms: trophozoite (active form) that parasites the duodenum and small intestine, and cyst which occurs only in feces; that is the invasive form of the parasite. After arriving in the human intestine, cysts of Giardia divide in trophozoite that mature in the duodenum and jejunum (upper intestine) and then multiply excessively (about 1.000.000/cm2) causing strong irritation of the intestinal mucosa and thus disturbing the digestive process by various enzymatic deficiencies. Infection with Giardia intestinalis is not always followed by clinical manifestations (in 20-45% of cases remaining asymptomatic carriers), but when the infection is strong, the disease starts suddenly, with explosive diarrhea, abdominal cramps, nausea, anorexia and general symptoms of weakness or state of low grade fever, sometimes associated with hives. Trophozoite is the vegetative form that is found in intestines (duodenum, jejunum) optical microscope resembles a pear cut lengthwise, with a rounded dorsal face and a ventral one. have two nucleus and four pairs of flagella. With the scourge can perform rotation movements, floating. presents a front ventral adhesive disc Cyst is a form of resistance and infectious as reach outside oval shaped Life cycle from the ingested cysts in the stomach is released trophozoites that migrate in the small intestine, duodenum and jejunum especially. In the gut is attached on the epithelial surface by the adhesive disc. The life cycle ends with seclusion parasites, which begins with their transition to dehydration of trophozoites and their pass to colon. Cysts are eliminated in the stool. How a person is infected? Man, sick or healthy carrier, is considered the main host of parasite. The infection is transmitted by cysts or from one person to another, either by water or contaminated food. Cysts transmission from one person to another is common in situations that do not maintain an adequate level of individual hygiene, especially in children collectivities. Cysts are fecal-oral transmitted from one child to another, in nurseries, kindergartens or schools, then from the infected child's family members. Cysts can be transmitted through contaminated food and by people handling them. Also, cysts can be spread by drinking water contaminated with cysts of human origin, when drinking water polluted by sewage or from damaged filtration system. Clinical Manifestations Some people are asymptomatic, while others may be symptomatic after an incubation period of about 2-3 weeks, with a number of symptoms, from mild diarrhea that spontaneously heals, to chronic diarrhea with weight loss. Symptoms may be: digestive and extra-digestive. Digestive symptoms: diarrhea abdominal pain abdominal distension, flatulence especially in children: loss of appetite, nausea and vomiting, lactose intolerance Extra-digestive symptoms: headache, dizziness, fatigue, insomnia, attention disorders allergic skin manifestations (urticaria, eczema) respiratory allergic manifestations (asthma, bronchitis, nasopharyngitis) Natural treatment for giardiasis with Calivita products Oregano oil is known for its natural antibiotic, antifungal, antimicrobial and antiparasitic effects. Numerous recent studies have shown the antiparasitic effect of oregano oil with a strong effect in the elimination of the parasite called Giardia, so Oregano Oil is a great help in the treatment of giardiasis. Sometimes, certain types of bacteria and parasites are more difficult to remove and their effects on the body are among the most unpleasant. Giardia is one of these parasites more difficult to identify and treat, and also is easily transferable. Mixed complex of natural antiparasitic ingredients from ParaProteX supplement composition has a spectacular effect on the most existing parasites in human body, including Giardia, Candida, cholera, dysentery and many others.