Ivermectin: How it Works and Where to Buy in Singapore

Parasitic infections affect millions of people globally, and while Singapore’s urban environment keeps rates relatively low, infections like Scabies, head lice, and intestinal worm infections still occur among residents. The country’s tropical climate and high population density make it easier for certain parasitic infections to spread if left unaddressed.

One of the most frequently prescribed options for these conditions is Ivermectin, an antiparasitic medicine that has been successfully used to treat several parasitic infections. Registered by Singapore’s Health Sciences Authority (HSA) for human use, it works quickly and is straightforward to take under proper medical guidance.

This article covers how Ivermectin works, its dosage, side effects, and where Singapore residents can access it safely, so read on.

What is Ivermectin and how does it work?

Ivermectin is an antiparasitic medication registered by Singapore’s Health Sciences Authority (HSA) for the treatment of parasitic infections in humans. It belongs to the class of anthelmintics and works by paralyzing and killing parasites, preventing them from reproducing or spreading within the body.

It is effective against conditions such as:

• Strongyloidiasis (parasitic infections that occur through the skin)
• Onchocerciasis (River Blindness)
• Scabies (skin infection caused by mites)
• Head lice infestations

Initially developed for veterinary use, it was later approved for human use due to its broad-spectrum activity and safety profile when used under medical guidance.

It works by attaching to special channels called glutamate-gated chloride channels, found in the nerve and muscle cells of parasites. These channels normally control the flow of chloride ions in and out of cells.

When Ivermectin binds to them, it keeps them permanently open, flooding the parasite’s cells with excess chloride ions. This disrupts the parasite’s ability to send nerve signals, leaving it paralyzed and unable to survive. Human cells do not carry these same channels, which is why Ivermectin targets parasites without harming the body.

Dosage and how to take Ivermectin?

The dosage varies based on the type of parasitic infection, body weight, and medical condition.

• For most parasitic infections: A single oral dose of 150-200 mcg per kg body weight is recommended.
• For Scabies: One dose of 200 mcg per kg body weight is recommended, which can be repeated after 7-14 days.
• For Strongyloidiasis: A single dose of 200 mcg per kg body weight is often effective. However, repeat doses can be required in severe cases.
  

It is essential to follow your prescription carefully. Here are the general guidelines to use it:

• Take it on an empty stomach with water, do not split, crush or swallow the tablet whole.
• Avoid taking it with food, as it can increase absorption unpredictably, especially with fatty foods, which allow more medicine to enter the bloodstream.
• Complete the full course even if symptoms improve.

Side effects of Ivermectin

While the medicine is generally well-tolerated, some individuals may experience mild side effects that go away as your body adjusts to the medicine, such as:

• Dizziness or drowsiness
• Nausea or vomiting
• Diarrhea
• Skin rash or itching
• Mild swelling of lymph nodes

Rare but serious effects can occur in some cases. They include:

• Seizures
• Confusion
• Severe allergic reactions
• Rapid heartbeat
• Vision changes

Precautions and contraindications

Before taking Ivermectin, it is important to be aware of the following:

• Always consult a doctor before use, even where a prescription is not legally required
• Inform your doctor if you have liver disorders, Asthma or immune-related conditions
• Use only under medical supervision during pregnancy and breastfeeding
• Avoid alcohol, as it can interfere with metabolism and increase the risk of side effects

Drug interactions

Ivermectin may interact with several medications. Always provide your doctor with a complete list of all medicines, herbal supplements, and over-the-counter products you are taking before starting treatment. Known interactions include:

• Warfarin (blood thinner)
• Antifungal medications like Ketoconazole and Itraconazole
• Antibiotics like Erythromycin and Clarithromycin
• Anti-anxiety medicines like Benzodiazepines
• HIV medications (protease inhibitors)

Where to buy Ivermectin

Ivermectin is a prescription-only medicine in Singapore, registered by the HSA for the treatment of parasitic worm infections. A valid prescription from a registered doctor is required to obtain it legally. Once prescribed, Singapore residents have several reliable options.

Online pharmacies

Many Singapore residents prefer ordering online for privacy, competitive pricing, and home delivery. GoodRxMedicine provides authentic Ivermectin sourced from licensed, GMP-compliant manufacturers with secure payment, discreet packaging, and doorstep delivery to Singapore addresses.

Before ordering from any online pharmacy, verify that they:

• Source from licensed, GMP-compliant manufacturers
• Require a valid prescription
• Use secure payment processing
• Provide order tracking
• Display clear medication and dosage details

Avoid websites offering Ivermectin at suspiciously low prices or without any medical guidance, as these are red flags for counterfeit products.

Local pharmacies in Singapore

With a valid prescription, the following pharmacy chains in Singapore can dispense Ivermectin:​

• Guardian Pharmacy
• Watsons Pharmacy
• Unity Pharmacy
• Raffles Pharmacy
• Hospital dispensaries (such as Singapore General Hospital and National University Hospital)

Stock availability can vary by location, so calling ahead before visiting is recommended.

Telehealth services

Singapore telehealth platforms connect residents with registered doctors for online consultations. After reviewing your medical history, providers can issue a prescription where appropriate, with medication delivered directly to your Singapore address.

Telehealth platforms serving Singapore residents include:

• MyDoc
• Speedoc
• Doctor Anywhere
• WhiteCoat
• Teleme

Clinics and hospitals in Singapore

For a face-to-face consultation, the following facilities in Singapore evaluate and treat parasitic infections and can prescribe Ivermectin where medically appropriate:

• Singapore General Hospital
• National University Hospital
• Tan Tock Seng Hospital
• Raffles Medical Group
• Registered general practitioners (GPs) across Singapore

Conclusion

Ivermectin is a proven antiparasitic medication that effectively treats infections such as Scabies, head lice, Strongyloidiasis, and River Blindness. It works by paralyzing and killing parasites without harming human cells.

Dosage depends on infection type and body weight and is best taken on an empty stomach. Common side effects like nausea and dizziness are usually mild and temporary, while serious reactions such as seizures require immediate medical attention.

In Singapore, Ivermectin is a prescription-only medicine registered by the HSA, meaning a valid doctor’s consultation is required before purchase. Singapore residents can fill their prescriptions at local pharmacies such as Guardian or Unity, consult a doctor via telehealth platforms like Doctor Anywhere, or visit specialists at Singapore General Hospital for an in-person evaluation. For affordable, discreet home delivery, GoodRxMedicine offers genuine Ivermectin shipped directly to Singapore. Always follow your doctor’s guidance before starting treatment.