Advise the patient to read the FDA-approved patient labeling (Instructions for Use). Instruct the patient on the following: Preparation and Administration [see Dosage and Administration ] Disperse carglumic acid tablets for oral suspension in water. Do not swallow whole or crushed. Ivermectin is a drug used to treat parasitic infections. Find out what parasites are affected and the possible side effects. Uses of Ivermectin. Ivermectin is a prescription medication that should only be used as directed by Mechanism of Action. Uses of Ivermectin. FDA-Approved Uses. Off-Label Uses.