How to Take Ivermectin and Mebendazole Together

People diagnosed with severe or mixed parasitic worm infections may not see improvements with a single-ingredient dewormer. They may require dual-action or multi-action therapy wherein more than one antiparasitic medication is prescribed at the same time. In the USA, the popular anthelmintics like Ivermectin and Mebendazole are designed to target different parasite species. This makes individuals wonder if they can be combined, how to take Ivermectin and Mebendazole together, is it safe, and so on. Both of these medicines help with parasite clearance, but they are not interchangeable. Just because they are described as “dewormers”, it does not dictate suitability for all.

Before you consider this combination deworming therapy, let us help you with everything you should know about dosing these anti-worm medicines safely.

What Are Ivermectin and Mebendazole? 

Ivermectin is a benzimidazole anthelmintic with broad-spectrum efficacy across several internal (systemic) or external parasite species. It mainly targets parasites causing scabies, lymphatic filariasis, river blindness, skin or scalp infections, or intestinal strongyloidiasis. Most affected individuals see improvements a few days or a couple of weeks after the single dose of this drug (the common Ivermectin dosing schedule). If required, a dosage could be repeated after 3 to 12 months. It is available in 3mg, 6mg, 12mg, and 24mg strengths.

Mebendazole is an intestinal worm infection medicine, safe for adults and children (aged 2 years or above). This medicine is selectively prescribed after a confirmed diagnosis of intestinal worms like pinworms, roundworms, hookworms, or whipworms. It works by interfering with the glucose-absorption mechanism of parasites, depleting their energy and causing death eventually. Mebendazole dosing schedule varies according to age, body weight, immune health, kidney function, types of worms infecting, and complexity of infection. Generally, Mebendazole dose for adults can vary from a single dose to a multi-day course. If required, the treatment may continue for a couple of weeks (for controlling severe/complicated infestations).

What type of parasitic infections do they treat?

Taking ivermectin with mebendazole together will help individuals diagnosed with severe or mixed worm infections improve underlying symptoms with the obvious treatment approach. As both these medicines target different types of parasites, their indications vary. Mebendazole is formerly preferred for addressing intestinal worm infestations, while Ivermectin addresses Strongyloides stercoralis and Onchocerca volvulus effectively (among many other internal and external parasites).

It’s your healthcare provider who will decide whether you should take these medicines alone or in combination. Before the treatment begins, the physician shall conduct blood or stool tests to identify the complexity of the infection. A custom treatment plan will be provided next, to be followed exactly as guided for eliminating worms effectively.

Can you take Ivermectin and Mebendazole Together?

Yes. In the USA, many adults are prescribed to take Ivermectin and Mebendazole together after a confirmed diagnosis of mixed/complicated/severe-stage parasitic worm infections. This dual-action deworming approach is selectively prescribed only after conducting an in-depth health analysis of the patient, assessing underlying symptoms and possible causes, chronic health issues (if any), ongoing medicines, allergies, etc.

No general rule prevails that all infected individuals should take both drugs to remove parasites. Some patients notice symptoms improving with a single dose of Ivermectin or Mebendazole, while others require a few consecutive days of Mebendazole to clear parasites. The treatment timeline varies too. Your correct approach depends solely on medical evaluation. Making any self-adjustments shall alter the outcome too and increase the likelihood of adverse reactions.

Is There an Interaction Between Ivermectin and Mebendazole? 

When taking the ivermectin and mebendazole combination, it is vital to consider possible interactions. Instead of only asking if ivermectin and mebendazole could interact, their interactions with other medicines should also be known. While getting these medicines prescribed, mention your existing medications, kidney or liver disease (if diagnosed), other health issues (if any), and related information.

Ivermectin or Mebendazole are not interchangeable. They should not be combined just because they are both parasitic infection medicines. On the contrary, using them together upon prescription should not make you worry about interactions. At times, people may notice side effects due to other medicines affecting the performance of these dewormers.

How to Take Ivermectin and Mebendazole Together

The Ivermectin-mebendazole combination dosage should be taken exactly as instructed by the physician. Don’t confuse ‘combination’ with one pill with two ingredients. Both drugs are available in different strengths and are prescribed together according to medical requirements.

The general dosage guidelines are as below.

• How to take ivermectin? It must be taken on an empty stomach only; best consumed an hour or two before the planned mealtime. Swallow the whole tablet with a glass of water, without crushing/chewing/breaking the pill. If prescribed a single dose, don’t take more of it on your own. Do not repeat the treatment without medical guidance either.
• How to take mebendazole? Depending on the severity of symptoms,Mebendazole can be prescribed as a single dose, a multi-day course, or a short course (up to a week or longer). While safe to take with or without food, most individuals prefer using it after a meal to reduce the chances of digestive upset. The tablet is swallowed whole with a glass of water at the indicated times. It is strongly discouraged to repeat the dose unless medically advised.

Possible Side Effects

Ivermectin may cause side effects like nausea, dizziness, fatigue, diarrhoea, or skin-related symptoms. In short, its possible reactions are based on the type of parasitic infection being treated.

Mebendazole may cause gastrointestinal symptoms like nausea, vomiting, headache, or abdominal discomfort. Any severe reactions are uncommon and only possible with misuse/overdose.

Not all the side effects are triggered by using dewormers alone. They may occur as a part of parasite clearance. On a safer note, patients must disclose their chronic illnesses (specifically associated with blood disorders, kidney or liver conditions, or immune health) before the treatment begins.

Which is better for worms? 

Neither of these two or any alternative anti-worm therapy, can be called ‘better’ than the other. It totally depends on the types of parasites involved, severity of infection, response to earlier treatments, and whether using the combination/individual therapy would be more appropriate.

For instance, if diagnosed with mild to moderate strongyloidiasis, then a single dose of Ivermectin would be enough. However, if different species of intestinal worms are affecting you at once, then Ivermectin could be paired with Mebendazole for a broader approach & faster parasite control.

Conclusion

One of the crucial parts of knowing how to take ivermectin and mebendazole together is understanding that no universal solution exists. Both medicines help in targeting and improving different types of parasitic infections at a time. The correct dosage strength and treatment duration vary among patients. Follow your dosage guidelines carefully to achieve desired health improvements. In addition, adopt hygienic lifestyle habits for lowering the risk of reinfection.

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