U.S. flag An official website of the United States government
  1. Home
  2. Drug Databases
  3. Drug Safety-related Labeling Changes

Drug Safety-related Labeling Changes (SrLC)

Get Email Alerts | Guide

STROMECTOL (NDA-050742)

(IVERMECTIN)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

Download Data

Expand all

03/14/2022 (SUPPL-30)

Approved Drug Label (PDF)

5 Warnings and Precautions

WARNINGS

Additions and/or revisions underlined:

Historical data have shown that microfilaricidal drugs, such as diethylcarbamazine citrate (DEC-C), might cause cutaneous and/or systemic reactions of varying severity (the Mazzotti reaction) and ophthalmological reactions in patients with onchocerciasis. These reactions are probably due to allergic and inflammatory responses to the death of microfilariae. Patients treated with STROMECTOL for onchocerciasis may experience these reactions in addition to clinical adverse reactions possibly, probably, or definitely related to the drug itself. (See ADVERSE REACTIONS, Onchocerciasis.)

The treatment of severe Mazzotti reactions has not been subjected to controlled clinical trials. Oral hydration, recumbency, intravenous normal saline, and/or parenteral corticosteroids have been used to treat postural hypotension. Antihistamines and/or aspirin have been used for most mild to moderate cases.

Neurotoxicity with the use of ivermectin, including alteration of consciousness of variable severity (e.g., somnolence/drowsiness, stupor, and coma), confusion, disorientation and death, has been reported in patients without onchocerciasis or in patients with onchocerciasis in the absence of Loa loa infection. These reactions have generally resolved with supportive care and the discontinuation of ivermectin.

6 Adverse Reactions

Additions and/or revisions underlined:

Neurotoxicity including alteration of consciousness of variable severity (e.g., somnolence/drowsiness, stupor, and coma), confusion, disorientation, and death (see WARNINGS).