Ivermectin Safety Guide: What to Know Before Taking It
Yes, Ivermectin is generally safe when it is prescribed for the approved conditions, like parasitic infections.
However, misuse, especially in unapproved doses or for off-label purposes, can be unsafe.
Misuse of Ivermectin can lead to serious side effects such as nausea, dizziness, or even neurological issues.
Before taking any Ivermectin Dose, it’s crucial to understand how it works, its approved uses, and potential risks.
In this blog, know everything you need to find out about Ivermectin’s safety profile, common side effects, and when it should or should not be used.
What is Ivermectin?
Ivermectin is an anti-parasitic medicine used to treat infections caused by parasites.
It helps treat infections like scabies, head lice, river blindness, and strongyloidiasis.
Ivermectin works by paralysing and killing parasites and treats the infection effectively.
It is Available in different forms, like oral and topical.
The doses of Ivermectin typically range from 150–200 mcg/kg based on the condition for which you are taking it.
Is Ivermectin Approved for Use in Humans?
Yes, the U.S. FDA has approved Ivermectin to treat specific parasitic infections in humans, such as:
- Strongyloidiasis
- Onchocerciasis (river blindness)
- Head lice (as a 0.5% topical lotion)
For other conditions like scabies, doctors may prescribe it off-label.
But you should use Ivermectin for these conditions only under medical supervision.
Note that Self-medicating is not safe.
Is Ivermectin Safe?
When taken as prescribed, Ivermectin is generally safe.
Most people tolerate it well at approved doses.
Common side effects of Ivermectin include:
- Nausea
- Dizziness
- Mild itching or rash
Severe side effects are rare but possible, especially if you take it in high doses or without a doctor’s advice.
Know the five most common side effects of Ivermectin
Warning: Don’t Use Animal Ivermectin
Never take Ivermectin meant for animals.
Veterinary versions are stronger and may contain ingredients that are toxic to humans.
Using the dosage meant for Animals can cause the following symptoms among humans:
- Seizures
- Coma
- Even death
Only use Ivermectin that’s prescribed for human use by a licensed doctor.
Can Ivermectin Treat COVID-19?
No, Ivermectin is not approved to treat or prevent COVID-19.
- The FDA and WHO both warn against using it outside of clinical trials.
- Studies like the Cochrane Review and the TOGETHER Trial found no strong evidence that it helps with COVID-19.
- Misuse has led to a rise in poisoning cases.
Stick to guidance from trusted health organisations.
And, note that using Ivermectin without medical advice can be dangerous.
Want to understand how Ivermectin compares to other antiparasitic drugs? Read our blog on Ivermectin vs. Albendazole: Know the Key Differences to learn more.
Who Should Avoid Ivermectin?
Some people should not take Ivermectin unless a doctor says it’s safe, especially in cases:
- Pregnant women, especially in the first trimester
- Children under 15 kg (33 lbs)
- People with liver disease
- Patients taking warfarin (a blood thinner)
- Anyone infected with Loa Loa, a parasite that can cause serious brain inflammation when treated with Ivermectin
Consider using Ivermectin only in these cases when prescribed safely by a doctor for you. Also, discuss with your doctor about using Ivermectin if you are pregnant or breastfeeding. And, In case if Ivermectin doesn't work for you, then you may also explore alternatives to Ivermectin for effective treatment.
What Happens If You Overdose on Ivermectin?
Taking too much Ivermectin can lead to serious health issues, such as:
- Vomiting
- Blurred vision
- Muscle tremors or seizures
- Breathing difficulties
- Loss of consciousness
There is no antidote, and you need emergency hospital care to manage symptoms.
In 2021, U.S. poison centres saw a 245% spike in ivermectin-related calls due to misuse.
Experiencing unusual symptoms with Ivermectin? Check out our detailed blog on Can Ivermectin Cause Constipation or Dizziness?
Can You Buy Ivermectin Without a Prescription?
In most countries, including the U.S., you need a prescription to get Ivermectin for human use.
Buying veterinary Ivermectin or unverified products online is illegal and unsafe.
But some online sources still sell fake or harmful products.
So, ensure you always buy from licensed pharmacies and ensure it’s FDA-approved for your condition.
Final Thoughts: When Is Ivermectin Safe?
Ivermectin is safe and effective when used properly. Always:
- Follow your doctor’s instructions
- Use only FDA-approved human formulations
- Avoid animal versions entirely
- Never take it for unapproved uses like COVID-19 unless part of a clinical trial
- Check with your doctor if you belong to a high-risk group
When you use it responsibly, Ivermectin can be a powerful treatment for parasitic infections.
But like all medicines, it must be used with care.
Faq
Yes, ivermectin is safe when prescribed by a doctor for approved uses like parasitic infections. Taking the correct dose is important under a doctor's advice. Note that Misuse or taking animal versions can cause serious side effects and should be avoided.
Mild side effects of Ivermectin include nausea, dizziness, diarrhoea, and skin rash. These symptoms usually go away on their own once your body adjusts to the medicine. However, Serious effects are rare but can occur if taken in high doses or without medical supervision.
No, in most countries, including the U.S., you need a prescription for human-use ivermectin. Buying it without a prescription, especially animal forms, is unsafe and illegal.
No, ivermectin is not approved for COVID-19 treatment. Health authorities like the FDA and WHO advise against using it for this purpose outside clinical trials due to a lack of strong evidence.
Pregnant women, children under 15 kg, people with liver disease, or those taking warfarin should not take ivermectin unless approved by a doctor.
Overdosing on Ivermectin can lead to symptoms like vomiting, seizures, breathing problems, or even coma. There's no antidote so that you may need emergency medical care right away during an overdose.



