Ivermectin is used to treat strongyloidiasis (threadworm; infection with a type of roundworm that enters the body through the skin, moves through the airways and lives in the intestines). Ivermectin is also used to control onchocerciasis (river blindness; infection with a type of roundworm that may cause rash, bumps under the skin, and vision problems including vision loss or blindness). Ivermectin is in a class of medications called anthelmintics. It treats strongyloidosis by killing the worms in the intestines. It treats onchocerciasis by killing the developing worms. Ivermectin does not kill the adult worms that cause onchocerciasis and therefore it will not cure this type of infection.
Ivermectin comes as a tablet to take by mouth. It is usually taken as a single dose on an empty stomach with water. If you are taking ivermectin to treat onchocerciasis, additional doses 3, 6, or 12 months later may be necessary to control your infection. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take ivermectin exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
If you are taking ivermectin to treat strongyloidiasis, you will need to have a stool exam at least three times during the first 3 months after your treatment to see if your infection has cleared. If your infection has not cleared, your doctor will probably prescribe additional doses of ivermectin.
Ivermectin is also sometimes used to treat certain other roundworm infections, head or pubic lice infestation, and scabies (itchy skin condition caused by infestation with small mites that live under the skin). Talk to your doctor about the risks of using this medication for your condition.
This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.
Before taking ivermectin,
Unless your doctor tells you otherwise, continue your normal diet.
Ivermectin is usually taken as a single dose. Tell your doctor if you do not take your medication.
Ivermectin may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
If you are taking ivermectin to treat onchocerciasis, you may also experience the following side effects. Tell your doctor if any of these symptoms are severe or do not go away:
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom).
Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them. However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. Talk to your pharmacist or contact your local garbage/recycling department to learn about take-back programs in your community. See the FDA's Safe Disposal of Medicines website ( Web Site) for more information if you do not have access to a take-back program.
It is important to keep all medication out of sight and reach of children as many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location – one that is up and away and out of their sight and reach. Web Site
In case of overdose, call the poison control helpline at 1-800-222-1222. Information is also available online at Web Site. If the victim has collapsed, had a seizure, has trouble breathing, or can't be awakened, immediately call emergency services at 911.
Symptoms of overdose may include:
Keep all appointments with your doctor and the laboratory. Your doctor may order certain lab tests to check your body's response to ivermectin.
Do not let anyone else take your medication. Your prescription is probably not refillable.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
AHFS® Consumer Medication Information. © Copyright, The American Society of Health-System Pharmacists, Inc., 7272 Wisconsin Avenue, Bethesda, Maryland. All Rights Reserved. Duplication for commercial use must be authorized by ASHP.
Selected Revisions: September 15, 2016.