Strongyloidiasis: In four clinical studies involving a total of 109 patients given either one or two doses of 170 to 200 mcg/kg of Ivermectin, the following adverse reactions were reported as possibly, probably, or definitely related to Ivermectin.
- Body as a whole: asthenia/fatigue (0.9%), abdominal pain (0.9%)
- Gastrointestinal: anorexia (0.9%), constipation (0.9%), diarrhea (1.8%), nausea (1.8%), vomiting (0.9%) Nervous System/Psychiatric: dizziness (2.8%), somnolence (0.9%), vertigo (0.9%), tremor (0.9%)
- Skin: pruritus (2.8%), rash (0.9%), and urticaria (0.9%).
Onchocerciasis: arthralgia/synovitis (19.3%), axillary lymph node enlargement and tenderness (11.0% and 4.4%, respectively), cervical lymph node enlargement and tenderness (5.3% and 1.2%, respectively), inguinal lymph node enlargement and tenderness (12.6% and 13.9%, respectively), other lymph node enlargement and tenderness (3.0% and 1.9%, respectively), pruritus (27.5%), skin involvement including edema, papular and pustular or frank urticarial rash (22.7%), and fever (22.6%), abnormal sensation in the eyes, eyelid edema, anterior uveitis, conjunctivitis, limbitis, keratitis, and chorioretinitis or choroiditis. These have rarely been severe or associated with loss of vision and have generally resolved without corticosteroid treatment. The following adverse reactions have been reported since the drug was registered overseas: hypotension (mainly orthostatic hypotension), worsening of bronchial asthma, toxic epidermal necrolysis, and Stevens-Johnson syndrome.