I saw a couple of long red/dark pink flattish things (not sure if they were worms)  in my 4-yr olds stool 2 days after i gave her anti-helminthic drug (zentel). Were these worms? if so, which kind of worms were they as they were really long and seemed to come out with every piece of stool.
Hello and welcome to Chat Doctor From your description.I can conclude that they were worms. Long worms in clusters are more likely roundworms (Scars Lumbricidae). There presence can be confirmed by stool examination for ova and parasites. Hope you find this answer satisfactory. Good luck.