yikes!!!! that explains it......Now I don't know what to do

because days before we treated them for Giadia and I just though it was the parasite again
Should I hold the medicine and see if that what it was?
Is 1/4 teaspoon a day split it into both their food a lot? Marley is 3.9lbs and Leeloo 2.2 pounds
Wicked sorry I'm little bit of the subject!!!!!!