Last Updated on 06/12/2026 ✔ Medically Reviewed by Dr. Arjun Srivastav What Is Ivermectin 80 Mg Tablet? Ivermectin 80 mg tablet is a high-strength antiparasitic medicine used to treat infections caused by parasites such as anti- worms and certain skin infestations. A medicine that kills or paralyses parasites Works by affecting the parasite’s nervous system The Ivermectin 80 mg tablet is a much stronger dose and is only for handling serious infections. Generally, it is given for the treatment of: River blindness or onchocerciasis Intestinal threadworms strongyloidiasis Scabies and head lice filariasis ✓ Composition: Ivermectin is the main generic element used in the tablet for giving relief from parasitic infections. ✓ Manufacturer: Different pharma companies use Ivermectin for their own research and building their branded medicines. Some of the main brand names are Vermectin and Ivermectin. ✓ Onset Of Action: Peak plasma levels- The drug usually attains its maximum concentration in your blood within 2 to 4 hours of taking the medicine. Initial effects- The drug generally helps to reduce symptoms of the infection within 4 to 5 days. How To Use Ivermectin 80 Mg Tablet Correctly? Intestinal worm infections Scabies (skin mites) Head lice infestation Strongyloidiasis Onchocerciasis ✓ Method of intake- You need to just swallow this medicine with a glass of water without crushing or breaking the whole pill. ✓ With or without food- When taken on an empty stomach, it absorbs and begins acting rapidly. However, if you have stomach issues, take it 1 hour after a meal. Mechanism Of Action Ivermectin 80 Mg Tablet Take on an empty stomach with water Follow the doctor’s instructions carefully ✓ Binding with glutamate channels: Ivermectin binds tightly to glutamate-gated chloride channels. The glutamate-gated chloride channels are like doors that control the flow of chloride ions in and out of the cells. Ivermectin binds to these doors and controls how they work. ✓ Chloride Influx: When this binding happens, it is like a lock that keeps the channels open. This means that a huge amount of chloride ions flows into the Chloride Influx of the parasite’s cells. ✓ Hyperpolarisation: All these extra chloride ions cause something called Hyperpolarization. This is like a kind of block that stops the cell from working. The cell is unable to send or receive signals because of the Hyperpolarization. ✓ Flaccid Paralysis: The parasite gets weak and cannot make its muscles work. This means the Flaccid Paralysis of the parasite stops it from feeding or moving around. The Flaccid Paralysis also stops the parasite from staying attached to the host, if it is a parasite,e and ultimately results in the parasite being whipped out of your body. Ivermectin 80 Mg Tablet- How Long Does It Last? ✓ Half-life- The 80 mg dose has a longer half-life, usually around 18 to 20 hours. Lungworms: This medicine works well to stop reinfection for 14 to 28 days. It depends on the type of worm. External Parasites: It also protects you against biting flies and some mites for up to 28 days. Dosage For Adults: ✓ Riverblindness: The doctors give the final dose after tracking the type of infection and its severity, and matching it with your health, age, and body weight. ✓ For Children: Finding the weight for children to get a suitable dose is very important in the case of children. Usually, the 80 mg dose is a severely high dose for anyone below the age of 18 years. Children from four to 8 years are generally given a smaller dose of up to 3 to 6 mg. Children above 8 years are given a dose of 6 to 12 mg. ✓ What Occurs If I overdose on an Ivermectin 80 mg tablet? Increasing frequency of use or going for a larger and heavier dose is not suitable. For example, the 80 mg dose is a high dose of Ivermectin, generally not given until the infection is very severe in adults. ✓ What Occurs If I Miss Taking A Dose? Usually, the dose given is in the form of a single dose. Hence, when you miss it a day, take it as soon as you remember the missed dose and inform your doctor about when you took the initial dose. Benefits Of Taking Ivermectin 80 Mg Tablet ✓ Physical Benefits Better Skin Health: It gets rid of the parasites on your skin, helping with swelling, redness, and pain, as in scabies. Better Hair Growth: Head lice issues in adults or children can hinder hair growth. However, using Ivermectin helps to get rid of head lice and improves hair growth and scalp skin. Better Gut Health: Intestinal and stomach infections like strongyloidiasis can affect our gut health,h causing indigestion, bloating, diarrhoea, and so on. However, using Ivermectin helps to clear out all such issues within a few weeks. ✓ Psychic Benefits Using the drug Ivermectin helps to get rid of symptoms like pain, discomfort, itching, and stinging in case of different infections and improves your mental health. It helps to reduce anxiety and stress in your mind and increases focus. ✓ Drug Interactions Blood Thinners: Ivermectin interacts with drugs like Warfarin to increase their effects, increasing the risks of skin bruising and bleeding. CYP3A4 Inhibitors: These drugs can reduce the enzyme CYP3A4 that is necessary for breaking down Ivermectin in the liver. Neurological Medicines: Pills affecting your CNS, like benzodiazepine, barbiturates, can increase their effects inside your body in the presence of Ivermectin, causing severe drowsiness and hallucinations. Anticonvulsants: These medicines reduce the effects of Ivermectin, making it difficult to resist the infection. Side Effects ➦ Common Effects Headache, Dizziness: Use the medicine before going to bed or at least 1 to 2 hours after getting up from bed. Indigestion, Bloating, Vomiting, Nausea: See if the symptoms get better if you take the medicine 1 hour after eating a meal. Joint Pain And Muscle Ache: Avoid doing heavy work after taking the medicine and take a rest. ➦ Intense Effects Mazzotti Reaction: Found as an instant effect in Patients (Check out the first 24 hours of taking the first dose). Severe fever with chills Swollen lymph nodes Painful or reddish eyes Precautions Before Starting Use Of Ivermectin 80 Mg Tablet History of Other Health Issues: Mention the doctors if you had these health issues in the past or are having them right now- Liver disorders-tumours, fatty liver Kidney disorders- kidney failure Weaker immune system: This will result in the need for a much longer dosage tenure since your immune system is weak. Asthma- Ivermectin can increase asthma signs, so doctors can adjust the dose suitably. Going For Health Tests: Your doctor may conduct a few health tests, such as-. Blood test for CBC count and checking immunity Liver and function tests to check for major hormones Checking stomach and gut health using ultrasound or other tests Pulmonary test to determine st if the patient has asthma, COPD or bronchitis Pregnancy: Doctors generally do not recommend an Ivermectin 80 mg dose directly to a pregnant mother. Smaller doses may be recommended. Also, tell the doctors if you are also planning a pregnancy. Breastfeeding: As per research from the TGA, Ivermectin can pass down in your breastmilk, which is highly toxic for your infant, so its use is not recommended at all. When To Seek Medical Help? ✓ Allergic side effects: Watch out for signs of swelling on the mouth, lips and throat, or skin rashes like hives. Stop your medicine in such cases and consult with the doctors. ✓ Changes in dose or tenure: The doctors may recommend a change in your dose or the duration for use, depending on how you recover or adjust to Ivermectin. ✓ No recovery: In general, you should be able to see symptoms recovering within 4 days of use. If that is not the case, consult with the doctors. Safety Advice ✓ Using the 80 mg dose: Doctors may not recommend the 80 mg dose until the smaller doses have been tested and found ineffective. ✓ Increasing immune-rich food items: It is vital to increase the intake of several vitamin and antioxidant-rich food items in your diet to increase immunity. Even though you are using Ivermectin, a strong immunity helps to fight against parasites. Storage And Disposal Guidelines Store at room temperature (20–25°C) Keep in a cool, dry place away from moisture and direct sunlight Keep the tablets in their original packaging to protect them from contamination Do not freeze Keep out of reach of children and pets Check the expiry date before use Disposal Guidelines for Ivermectin 80 mg Do not flush tablets down the toilet or sink Do not throw directly into the household trash unless properly secured ✓ Recommended methods: Return to a pharmacy: Many pharmacies have take-back programs for unused or expired medicines. Seal and discard: If no take-back option: Crush the tablets Mix with unwanted substances (like coffee grounds or dirt) Place in a sealed bag or container before discarding Where Can You Buy Ivermectin 80 Mg Tablet In Australia? You can use a reliable website like australiarxmeds.com for discreet delivery in Australia. You can order Ivermectin 80 online from pharmacies. Make sure you only buy from verified and licensed sources to ensure authenticity and safety. Online pharmacy, AustraliaRXMeds, features different dosages of Ivermectin. So, it is suitable for placing your order from there and getting home delivery. Summary Ivermectin 80 mg is a powerful antiparasitic medicine, but the correct dose depends on your weight—so it should only be used under medical supervision. Resource portals AustraliaRxMeds provides content for general education and awareness. Articles are based on trusted medical resources such as the Cleveland Clinic. Please consult your doctor or pharmacist for personalised guidance. You can see Easy-to-understand patient information Explains that ivermectin is used to treat parasitic diseases in humans and animals Confirms its role in treating diseases like onchocerciasis and other parasitic infections FAQs Is 80 mg a normal dose? No. 80 mg is a very high dose. Ivermectin is usually prescribed based on body weight (mcg/kg), so this strength is not commonly used unless specifically advised by a doctor. How should I take Ivermectin? Take on an empty stomach. Swallow with water Follow your doctor’s exact instructions How quickly does it work? Starts working within a few hours Continues working for several days How fast does it work? Starts working within a few hours Continues working for several days Do I need more than one dose? Sometimes one dose is enough In some infections, a repeat dose after 7–14 days is needed What happens in case of overdose? Overdose may cause: Severe dizziness Low blood pressure Confusion or neurological symptoms �� Seek immediate medical help if overdose is suspected.