AVOCA CAUSTIC PENCIL 75% w/w Cutaneous stick Ref.[27582] Active ingredients: Silver nitrate

Source: Medicines & Healthcare Products Regulatory Agency (GB)  Revision Year: 2019  Publisher: Bray Group Ltd, 1 Regal Way, Faringdon, Oxfordshire, SN7 7BX

4.1. Therapeutic indications

Used for removing granulation tissue, warts (including verrucae), for cautery and as a caustic.

4.2. Posology and method of administration

For topical use only – not to be taken.

The tip is moistened with suitably clean water and applied topically to the area to be treated. Surrounding areas of healthy skin, etc. should be protected from the caustic/staining action of silver nitrate by a suitable barrier such as petroleum jelly, where necessary and practicable.

4.9. Overdose

Excessive quantities given or incorrect use in topical application may give rise to burning or staining.

Accidental poisoning by ingestion is unlikely with the small quantities involved, but symptoms that do arise are due to the corrosive nature of silver nitrate. There may be pain in the mouth sialorrhoea, diarrhoea, nausea, vomiting, coma or convulsions. Tissues and vomit will be stained black.

Treatment for accidental or intentional poisoning by ingestion should be commenced without delay. This should be by washing out the stomach repeatedly with 1% sodium chloride solution. After this lavage a purgative should be given, such as 30 g of sodium sulphate in 250 ml of water, to be allowed to remain in the stomach. Demulcents such as egg-white, milk or liquid paraffin may be administered, with pethidine or morphine if necessary. Close attention must be paid to renal function and fluid balance.

Paediatric population

No data are available.

6.3. Shelf life

5 years.

6.4. Special precautions for storage

Store in the original package to protect from light and moisture.

6.5. Nature and contents of container

Box containing 50 or 100 applicators in plastic bags of 10. Each applicator is a 15cm long flexible plastic handle with a treated tip.

6.6. Special precautions for disposal and other handling

The flexible plastic handle may be shaped according to the particular application as required. The tip is moistened with suitably clean water and applied topically to the tissue to be treated for 1 to 2 minutes. Do not moisten the tip using saline solution.

It must be used precisely according to the instructions due to the corrosive and staining nature of the material.

Any unused medicinal product or waste material should be disposed of in accordance with local requirements.

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