Bob Martin Clear Wormer 20mg Spot-On Solution For Cats And Kittens

Revised: January 2016

AN: 01400/2015



Bob Martin Clear Wormer 20 mg Spot-on Solution for Cats and Kittens


Each 0.5 ml pipette contains:

Active substance:

Praziquantel 20 mg


Butylhydroxytoluene (E321) 0.5 mg

For the full list of excipients, see section 6.1.


Spot-on solution.

Clear, colourless to pale amber solution


4.1 Target species


4.2 Indications for use, specifying the target species

For the treatment of tapeworms of cats. The product is effective against mature and immature forms of Dipylidium caninumand Taeniaspecies. The product is also effective against Echinococcus multilocularis.

4.3 Contraindications

Do not use on cats weighing less than 1 kg bodyweight.

Do not use in cases of hypersensitivity to the active substance or to any of the excipients.

4.4 Special warnings for each target species

Do not allow recently treated animals to groom each other.

4.5 Special precautions for use

i) Special precautions for use in animals

Care should be taken to avoid the contents of the tube coming into contact with the eyes or mouth of the recipient animal.

For external use only.

ii) Special precautions to be taken by the person administering the medicinal product to animals

This product can be irritant to the skin and eyes.

Care should be taken to prevent contact of the solution with the skin or eyes.

If contact with the skin occurs, wash off any skin contamination with soap and water immediately.

If accidental contact occurs with the eyes, flush the affected eyes thoroughly with clean fresh water.

In the event of skin or eye contact, seek medical advice if irritation persists and show the Doctor this package.

Do not stroke or groom animals until area of application is dry (typically around 1 hour after application).

Wash hands thoroughly after use.

Do not eat, drink or smoke during application.

Store away from food, drink or animal feedingstuffs.

iii) Other precautions

Keep recently treated pets away from varnished, polished, plastic or leather surfaces.

4.6 Adverse reactions (frequency and seriousness)

Occasionally a transient local reaction such as scurf or mild exudation may be observed at the application site following treatment.

The product is bitter tasting and salivation may occasionally occur if the cat licks the application site immediately after treatment. This is not a sign of intoxication and disappears after a short time without treatment.

4.7 Use during pregnancy, lactation or lay

There are no contra-indications against use during pregnancy and lactation.

4.8 Interaction with other medicinal products and other forms of interaction

No incompatibility has been observed between this product at the recommended dose and a range of common veterinary treatments.

4.9 Amount(s) to be administered and administration route

Dosage and Treatment Schedule

The minimum dose rate is 8 mg/kg bodyweight, which equates to 1 tube per

2.5 kg bodyweight.


Number of Tubes

Quantity of Praziquantel

mg/kg bw

1 - 2.5 kg


20 mg

8 - 20

>2.5 - 5 kg


40 mg

8 - 16

>5 kg


60 mg

maximum 12

Method of Administration

Remove one tube from the package. Hold tube in an upright position and snap off the cap, opening the tube.

Part the hair on the cat's neck at the base of the skull until the skin is visible.

Place the tip of the tube on the skin and squeeze firmly several times to empty the contents directly onto the skin. Application at the base of the skull will minimise the opportunity for the cat to lick the product.

To minimise the possibility of run-off after application of more than one pipette, it is advised that the applications should be performed slowly to allow absorption and that it may be advisable to allow the contents of the previous pipette to be absorbed before applying another.

Tapeworm infestation is certain to re-occur unless control of intermediate hosts such as fleas, mice etc. is undertaken.

Flea control: flea infestations can be controlled by the regular use of effective flea control remedies.

Mice control: if cats roam and hunt, contact with, and consumption of, mice and subsequent re-infestation with Taenia taeniaeformisis impossible to prevent.

It is recommended to re-apply the product when signs of tapeworm infestation re-appear or at monthly intervals.

4.10 Overdose (symptoms, emergency procedures, antidotes), if necessary

Overdosing can lead to slight skin reactions which disappear without treatment within a few days.

4.11 Withdrawal period(s)

Not applicable as the product is not indicated for the treatment of food producing animals.


Pharmacotherapeutic group: Anthelmintics, Quinoline derivatives and related substances.

ATCvet code: QP52AA01.

5.1 Pharmacodynamics

Praziquantel is effective against all stages of development of intestinal tapeworms. The substance is very rapidly absorbed and distributed throughout the parasite. Both in vivoand in vitrostudies have shown that praziquantel causes severe damage to the parasite integument, resulting in contraction and paralysis. There is an almost instantaneous tetanic contraction of the parasite musculature and a rapid vacuolisation of the syncytial tegument. This rapid contraction has been explained by changes in divalent cation fluxes, particularly calcium.

5.2 Pharmacokinetics

Praziquantel is absorbed very rapidly and almost completely in the stomach and small intestine. Studies of the behaviour following oral administration have been conducted in rats, dogs, monkeys, sheep and humans. Depending on species, maximum serum levels are reached within 0.3 to 2 hours. The chemical is evenly distributed to all organs. The elimination half-lives of 14C-praziquantel and its metabolites are between 2 and 3 hours in rats, dogs, monkeys and sheep.

Praziquantel is rapidly metabolised in the liver in both humans and animals with the 4-hydroxycyclohexyl derivative as the main metabolite. Praziquantel is completely eliminated from the body within 48 hours; irreversible binding to body constituents has not been observed. Elimination is in the form of metabolites with virtually no parent compound excreted. Between 40% and 71% of the substance is eliminated in the urine and 13%-30% in the faeces.


6.1 List of excipients

Butylhydroxytoluene (E321)


6.2 Incompatibilities

None known.

6.3 Shelf-life

Shelf-life of the product as packaged for sale: 2 years

6.4 Special precautions for storage

Store away from food, drink and animal feeding stuffs.

Do not store above 25°C.

Store in a dry place in the original package.

6.5 Nature and composition of immediate packaging

Packaging style: Blister pack of 2 or 4 unit dose tubes in a carton.

Container material: White polypropylene tube with a snap-off tab.

6.6 Special precautions for the disposal of unused veterinary medicinal product or waste materials derived from the use of such products, if appropriate

Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal products should be disposed of in accordance with local requirements.


Bob Martin (UK) Ltd.

Wemberham Lane



BS49 4BS


Vm 00715/4129


01 April 2015


January 2016

06 January 2016

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