1. Name Of The Medicinal Product
Cerumol Ear Drops
2. Qualitative And Quantitative Composition
Active Drug Substances
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3. Pharmaceutical Form
Ear drops solution
Oily drops for topical application
4. Clinical Particulars
4.1 Therapeutic Indications
To loosen wax causing occlusion or partial occlusion of the external auditory meatus.
(Either a collection of soft wax or a harder wax plug.)
4.2 Posology And Method Of Administration
At home: With the head inclined, 5 drops are put into the ear. This may cause a harmless tingling sensation. A plug of cotton wool moistened with Cerumol or smeared with petroleum jelly should then be applied to retain the liquid. One hour later, or the next morning, the plug is removed. The procedure is repeated twice a day for three days; the loosened wax may then come out on its own making syringing unnecessary. If any wax remains the doctor should be consulted so that syringing of the softened residue may be carried out.
At the surgery: If there has been no prior treatment with Cerumol, 5 drops are instilled as described above and left for at least 20 minutes. Then syringing or a probe tipped with cotton wool may be employed.
4.3 Contraindications
Otitis externa, seborrhoeic dermatitis and eczema affecting the outer ear. Perforated ear drums.
4.4 Special Warnings And Precautions For Use
Not to be taken internally. Do not use for more than three days without consulting your doctor. Cerumol contains Arachis oil (peanut oil) and should not be taken by patients known to be allergic to peanut. As there is a possible relationship between allergy to peanut and allergy to soya, patients with soya allergy should also avoid Cerumol.
4.5 Interaction With Other Medicinal Products And Other Forms Of Interaction
None known.
4.6 Pregnancy And Lactation
No side effects have been reported.
4.7 Effects On Ability To Drive And Use Machines
None known, but the actual wax plug may cause deafness.
4.8 Undesirable Effects
Local reaction is extremely rare.
4.9 Overdose
As the product is applied topically, overdosage as such is not possible. In the case of accidental ingestion, the amounts of the majority of the ingredients in the bottle are too small to give rise to toxic effects. The 550mg of Chlorobutanol in the whole bottle might cause excessive sedation in a child.
5. Pharmacological Properties
5.1 Pharmacodynamic Properties
The drug is applied topically to aid the removal of cerumen. Thus normal pharmacological criteria cannot be applied.
The action is thought to be due to the loosening and lubricating properties of the solvent mixture, rather than its solvent properties. This is intrinsic to the solvent mixture.
Arachis Oil is an oily substance to aid lubrication of the cerumen plug (water based solvents cause swelling of cerumen). It is however too viscous to be used on its own.
Chlorobutanol is an anti-bacterial and anti-fungal, but its main purpose in this product is to reduce the viscosity of the mixture, giving better penetrating characteristics to the oil.
p-Dichlorobenzene: is an insecticide whose presence also reduces viscosity.
5.2 Pharmacokinetic Properties
The rate of loosening or dissolution of the cerumen is extremely variable.
Trials have shown that Cerumol is the only one of a number of agents that was significantly better than sodium bicarbonate in aiding the removal of wax.*
*J Fraser, J Laryng. and Otology, 1970, 84, (10), 1055.
5.3 Preclinical Safety Data
None stated
6. Pharmaceutical Particulars
6.1 List Of Excipients
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6.2 Incompatibilities
None known
6.3 Shelf Life
5 years. Use within 6 months of opening
6.4 Special Precautions For Storage
No special precautions necessary.
6.5 Nature And Contents Of Container
11ml container in a 12.5ml amber glass bottle. Packaged together with a separate dropper.
6.6 Special Precautions For Disposal And Other Handling
None.
7. Marketing Authorisation Holder
Thornton & Ross Ltd
Linthwaite
Huddersfield
West Yorkshire
HD7 5QH
United Kingdom
8. Marketing Authorisation Number(S)
PL00240/0352
9. Date Of First Authorisation/Renewal Of The Authorisation
30/05/1989
10. Date Of Revision Of The Text
17.03.09
11 DOSIMETRY
IF APPLICABLE
12 INSTRUCTIONS FOR PREPARATION OF RADIOPHARMACEUTICALS
IF APPLICABLE
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