Medicines & Supplements A to Z > Ivermectin


Last updated on 09/07/2021.

Overview   |   Dosage   |    Side Effects   |   Precautions  |   Tips  |   Where To Buy  

GENERIC NAME: Ivermectin



DRUG CLASS: Anthelmintics

SUB CLASS: Pediculicides

USED FOR: Rosacea, head pediculosis

– 10 mg/g (cream)

What is Ivermectin for?

Ivermectin belongs to a class of medications called anthelmintics. It kills parasites by disrupting their nervous systems. It is used in the treatment of head lice infestations. Ivermectin is also used to treat rosacea, an inflammatory skin condition that usually affects the face.

How to use it?

Ivermectin is available as a cream that can be used on the skin. Apply thinly to the face or scalps only, and avoid contact with the eyes, lips and mucous membranes.

Head pediculosis
Apply sufficient amount to dry hair and scalp, and leave on for 10 minutes before rinsing.

Apply onto affected areas once daily for up to 4 months. Repeat treatment course if needed.

What are the side effects of Ivermectin?

Common side effects of Ivermectin include eye irritation, dandruff, dry skin, skin and scalp irritation, and skin reactions.

Who should not take Ivermectin?

People allergic to Ivermectin or any component of the formulation.

Pharmacist Tips:

Avoid contact with eyes and mucous membranes.

Common dosing schedule:
Ivermectin is applied once daily.

This schedule is for reference only, adjustments may be made according to individual needs.

Some common medications Ivermectin may interact with:
Warfarin and other anticoagulants

Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.

Where to buy Ivermectin in Hong Kong?

In Hong Kong, Ivermectin is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at

Need more information?

For detailed information about the use of Ivermectin in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.