Which of these would be the most effective at destroying giardia, a protozoan that infects the intestinal tract? anti-inflammatory antiparasitic pain relievers antihistamines

The correct answer would be antiparasitic.

Giardia is microscopic parasite that cause infection of small intestine termed as giardiasis.

It can spread by drinking contaminated water, eating contaminated food, and by physical contact with the infected person.

The symptoms usually appear after two weeks of contamination which includes weight loss, vomiting, nausea, fatigue, bloating et cetera.

The treatment includes use of antibiotics or antiprotozoal medicines.

Commonly used antibiotics (antiparasitic) are Metronidazole, Tinidazole, Nitazoxanide, and Paromomycin.