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Clamoxyl RTU 150 mg/ml Injection


Prescription Medicine
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  • 100ml
  • 250ml
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£29.99 - £61.95
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Clamoxyl Ready-to-Use 150 mg/ml suspension for injection.


Clamoxyl Ready-To-Use 150 mg/ml suspension for injection is a sterile off-white suspension containing 150 mg/ml amoxicillin as Amoxicillin trihydrate.


Amoxicillin is a broad spectrum semi-synthetic penicillin which is bactericidal in vitro against a wide range of Gram-positive and Gram-negative bacteria including the following: Actinomyces spp; Bacillus spp; Bordetella bronchiseptica; Clostridium spp; Corynebacterium spp; Escherichia coli; Fusobacterium spp; Haemophilus spp; Leptospira spp; Moraxella spp; Pasteurella spp; Proteus spp; Salmonella spp; streptococci; staphylococci (penicillin-sensitive strains).

Clamoxyl RTU is indicated for the treatment of infections in dogs, cats, sheep, pigs and cattle, caused by amoxicillin sensitive organisms.

Dosage and administration

The recommended dosage rate is 7 mg/kg bodyweight once daily for up to 5 days by subcutaneous (dogs, cats), or intramuscular (dogs, cats, sheep, pigs, cattle) injection.

If the volume to be given is greater than 15 ml (cattle) and 5 ml (sheep and pigs), the dose should be divided and the remaining should be injected in another site.

The following is intended as a guide



weight (kg)

Dose (volume)




Store Cattle





















Dog  – large



– medium



– small








As a guide this is equivalent to 0.25 ml per 5 kg daily.

Shake the vial well to suspend the active ingredient before use. Swab the rubber septum and remove the required volume aseptically.

Massage the injection site after administration. Use a new anatomical site for repeated injections. To ensure the correct dosage, bodyweight should be determined as accurately as possible to avoid overdosing.

In common with other penicillin preparations hydrolysis takes place rapidly in the presence of water. It is important, therefore, that a dry syringe is used when extracting suspension for injection to avoid contaminating the remaining contents of the vial with drops of water.

Contra-indications, warnings, etc

Not to be used in rabbits, guinea pigs, hamsters or gerbils.

The suspension is not suitable for intravenous or intrathecal administration.

Do not use in animals with known sensitivity to the active substance.

Use of the product may result in local tissue reaction.

Use of the product should be based on susceptibility testing of the bacteria isolated from the animal. If this is not possible, therapy should be based on local epidemiological information.

Clamoxyl RTU is not effective against beta-lactamase producing organisms.

Withdrawal periods

Meat: Cattle: 54 days.

Sheep: 47 days.

Pigs: 47 days.

Milk: Cattle: 60 hours from the last treatment.

Not to be used in sheep producing milk for human consumption.

Operator warnings

Care should be taken to avoid accidental self-injection.

Penicillins and cephalosporins may cause hypersensitivity (allergy) following injection, inhalation, ingestion or skin contact. Hypersensitivity to penicillins may lead to cross-reactions to cephalosporins and vice-versa. Allergic reaction to these substances may occasionally be serious.

Do not handle this product if you know you are sensitised, or if you have been advised not to work with such preparations.

Handle this product with great care to avoid exposure, taking all recommended precautions.

If you develop symptoms following exposure such as a skin rash, you should seek medical advice and show the doctor this warning. Swelling of the face, lips or eyes, or difficulty with breathing are more serious symptoms and require urgent medical attention.

Wash hands after use.

Pharmaceutical precautions

Do not store above 25°C.

Shake the bottle well before use.

This product does not contain an antimicrobial preservative. Following withdrawal of the first dose, use the product within 28 days. Discard unused material.

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

To avoid excessive perforation damage to the rubber seal, it is recommended that the 250ml vial be used for large animal treatment only. Do not broach more than 40 times.

Keep out of reach of children.

For animal treatment only.

Legal category


Packaging Quantities

Packs of 6 x 100 ml and 4 x 250 ml vials. Not all pack sizes may be marketed.

Shipping charges mainland GB zone1

Value Weight Delivery Charge
Over £49.00 Any Weight FREE
Under £49.00 No weight limit £4.50
Under £49.00 Under 250 grams £3.49

Most orders are despatched the same day and standard delivery is 3 to 5 working days from despatch. FAST Expedited options are available at extra cost - these usually arrive in 24-48hrs from dispatch but delays are possible during busy periods.

Postcodes outside of Zone 1 (including some areas within mainland UK) may incur extra carriage charges due to surcharges imposed by the couriers. These will be calculated on the website at the checkout.

NB: Orders placed with faster delivery must be placed before 13:00 to ensure same day dispatch (excluding weekends and bank holidays). Please also check on the product page that the items ordered show 'In Stock' otherwise your order will be delayed until the stock becomes available, which in most cases will only be 24hrs.

Estimated "Usually shipped in" information is shown against most products

Overseas orders

We no longer send goods outside of the UK.

Prescription Items

Prescription items will be sent on receipt of a valid signed and dated prescription.

Pick up

We offer a pickup service for orders placed over the phone.

Please ring us on 01833 641112 for more information.

Refrigerated Items

Refrigerated items will be sent by carrier or express delivery at a cost of £7.50, with coolpacks, unless you pay for a premium for a refrigerated delivery. We will contact you prior to despatch for your instructions.

We want you to be completely satisfied with any purchase. If not any item* can be returned to us within 14 days of receipt for exchange or refund Please give us a ring for a returns number on 01833 641112 or alternatively email sales@hyperdrug.co.uk to obtain a returns number.

*Due to legal requirements medicines may not be returned except to correct an error in despatch or in response to an "official recall". If an item is believed to be faulty it should be returned for inspection and it may be necessary to forward it to the manufacturers for testing before replacements or refunds can be authorised. This does not infringe legal rights. Please contact our customer services for a "Returns Number" which must appear on the outside of the package or it will not be accepted. We advise customers to use an insured method of shipping and to retain proof of despatch. We may refuse returns on products specially obtained or manufactured to order. Items must be returned unsoiled and unused and sent adequately packed and carriage paid.

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