Hypotension (mainly orthostatic hypotension), worsening of bronchial asthma, TEN, SJS, seizures, hepatitis, elevated liver enzymes & bilirubin. Strongyloidiasis: Asthenia/fatigue, abdominal pain; anorexia, constipation, diarrhea, nausea, vomiting; dizziness, somnolence, vertigo, tremor; pruritus, rash, & urticaria. Onchocerciasis: Worsening of Mazzotti reactions during the first 4 days post-treatment; ophth side effects; onchocerciasis conjunctival hemorrhage.