Quellada-M cream shampoo (malathion)

How does it work?

Quellada-M cream shampoo contains the active ingredient malathion, which is an organophosphorous insecticide that kills parasites such as head lice and pubic lice.

Malathion works by blocking the action of an enzyme in the parasite called cholinesterase. This enzyme is essential for the growth and survival of the parasite. By inactivating it, malathion disrupts vital metabolic processes in the parasites and ultimately leads to their death. Quellada-M cream shampoo kills head lice and pubic lice.

To treat head lice, the shampoo should be applied to wet hair. A sufficient amount should be used to work up a rich lather and ensure that no part of the scalp is left uncovered. Pay special attention to the back of the neck and the area behind the ears. Take care to avoid the eyes. Leave the shampoo on for at least five minutes before rinsing thoroughly with clean warm water and then repeating the procedure. While the hair is still wet, comb with an ordinary comb. A fine-toothed nit comb can then be used to remove the dead lice and eggs. This treatment should be carried out a total of three times at intervals of three days.

To treat pubic lice, the shampoo should be applied to wet pubic hair and the hair between the legs and anus. Use enough to work up a rich lather. Leave on for at least five minutes before rinsing thoroughly with clean warm water and then repeating the procedure. A fine-toothed nit comb can then be used to remove the dead lice and eggs. This treatment should be carried out a total of three times at intervals of three days.

Quellada-M cream shampoo is a water-based malathion product. These are preferable to alcohol-based lotions for the treatment of pubic lice, as they are less irritant to broken skin and sensitive areas such as the genitalia. Water-based products are also preferred in small children and in people with asthma or eczema, for whom the alcohol-based products may be irritant.

In general however, lotions rather than shampoos are preferred for the treatment of head lice and pubic lice, as they are left in contact with the hair for longer than shampoos, giving a greater chance of killing the lice and their eggs.

What is it used for?

Head lice

Pubic lice .

Warning!

This medicine is for external use only.

Avoid contact with the eyes.

It is recommended that rubber gloves be worn by people giving repeated applications or treating large numbers of people with this medicine, for example clinic or school nurses.

Do not use this medicine more than three times at intervals of three days. Do not repeat within three weeks.

Not to be used in

Infants under six months of age, except on medical advice.

This medicine should not be used if you are allergic to one or any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy. If you feel you have experienced an allergic reaction, stop using this medicine and inform your doctor or pharmacist immediately.

Pregnancy and breastfeeding

Certain medicines should not be used during pregnancy or breastfeeding. However, other medicines may be safely used in pregnancy or breastfeeding providing the benefits to the mother outweigh the risks to the unborn baby. Always inform your doctor if you are pregnant or planning a pregnancy, before using any medicine.

This medicine is not known to be harmful if used during pregnancy or breastfeeding. However, as with all medicines, it should be used with caution by pregnant or breastfeeding women and only on the advice of a doctor.

Side effects

Medicines and their possible side effects can affect individual people in different ways. The following are some of the side effects that are known to be associated with this medicine. Because a side effect is stated here, it does not mean that all people using this medicine will experience that or any side effect.

No side effects have been reported with this medicine

The side effects listed above may not include all of the side effects reported by the drug's manufacturer. For more information about any other possible risks associated with this medicine, please read the information provided with the medicine or consult your doctor or pharmacist.

How can this medicine affect other medicines?

This medicine is not known to affect other medicines.

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