Skip to content
POM-V Prescription Required Companion Animal

Tsefalen 50mg/ml Powder for Oral Suspension for Dogs up to 20 kg and Cats

Active ingredient: Cefalexin

Form

Liquid

Species

Cats Dogs

Manufacturer

Nextmune Italy S.R.L.

VMD MA No.

58047/4002

What it's used for

CATS: For the treatment of infections of the respiratory system, urogenital system and skin and localised infections in soft tissue caused by bacteria susc...

Full indications, dosage and side effects ↓
View official SPC (PDF)

The prescription itself has a price. See what practices near you charge for a consultation and the written prescription fee.

Paying less for Cefalexin

  1. 1

    Ask your vet for a written prescription

    They must provide one on request. Under the CMA Order the fee is capped at £21 from 2027.

  2. 2

    Fill it at a registered online retailer

    The CMA found online pharmacies 50–60% cheaper than practice dispensing on common medicines — typically £200–£300 a year.

Prescription required

Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.

Clinical information

Tsefalen 50mg/ml Powder for Oral Suspension for Dogs up to 20 kg and Cats — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.

CATS: For the treatment of infections of the respiratory system, urogenital system
and skin and localised infections in soft tissue caused by bacteria susceptible to
cefalexin.
AN: 00774/2024 & 00775/2024Page 2 of 8
The recommended dose is 15 mg of cefalexin per kg of body weight (0.3 ml of
reconstituted product per kg of body weight), twice a day. In severe or acute
conditions, the dose may be doubled to 30 mg/kg (0.6 ml/kg) twice daily.
The product must be administered for a minimum of 5 days.
- 14 days in cases of urinary tract infection,
- At least 15 days in cases of superficial infectious dermatitis,
- At least 28 days in cases of deep infectious dermatitis.
To ensure a correct dosage, body weight should be determined as accurately as
possible to avoid underdosing.
To facilitate the dosage and the administration, the syringe present in the package
can be used.
The veterinary medicinal product can be added to food if necessary.
AN: 00774/2024 & 00775/2024Page 5 of 8
Prior to addition of water for reconstitution, the bottle should be inverted and tapped
to loosen the powder before adding water.
Water is added to the respective fill line on the bottle. The bottle is then closed,
inverted and vigorously shaken for 60 seconds. The level of solution will drop slightly
therefore continue adding water up to the fill line marked on the bottle label prior to
filling the dosing syringe.
After reconstitution, the volume of red-coloured suspension is 100 ml for the bottle
containing 66.6 g of powder and 60 ml for the bottle containing 40.0 g of powder.
Shake vigorously before each use of the product for at least 60 seconds.
Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.
Do not use in rabbits, gerbils, guinea pigs and hamsters.
Cats:
Rare
(1 to 10 animals / 10,000
animals treated):
Vomiting
1,2
, Hypersensitivity reaction
.Very rare
(<1 animal / 10,000 animals
treated, including isolated
reports):
Diarrhoea
1,2
,

Nausea.
Dogs:
Rare
(1 to 10 animals / 10,000
animals treated):
Hypersensitivity reaction
.Very rare
(<1 animal / 10,000 animals
treated, including isolated
reports):
Nausea, vomiting
, diarrhoea
.
Mild and transient, at the lowest recommended dosage regime. Symptoms were
reversible in most cats without symptomatic treatment.
AN: 00774/2024 & 00775/2024Page 4 of 8
In case of recurrence, the treatment should be discontinued and the advice of the
attending veterinarian sought
In cases of hypersensitivity reactions the treatment should be discontinued.
Reporting adverse events is important. It allows continuous safety monitoring of a
veterinary medicinal product. Reports should be sent, preferably via a veterinarian, to
either the marketing authorisation holder or the national competent authority via the
national reporting system. See the package leaflet for respective contact details.
Cross-resistance has been shown between antimicrobials in the beta-lactam group.
Use of the cefalexin should be carefully considered when susceptibility testing has
shown resistance to beta lactam group because its effectiveness may be reduced.

Special precautions for safe use in the target species:
Use of the product should be based on identification and susceptibility testing of the
target pathogen(s). If this is not possible, therapy should be based on
epidemiological information and knowledge of susceptibility of the target pathogens
at farm level, or at local/regional level.
An antibiotic with a lower risk of antimicrobial resistance selection (lower AMEG
category) should be used for first line treatment where susceptibility testing suggests
the likely efficacy of this approach.
Narrow spectrum antibiotic therapy with a lower risk of antimicrobial resistance
selection should be used for first line treatment where susceptibility testing suggests
the likely efficacy of this approach.
Deviating from the instructions given in the SPC when using the product may
increase the prevalence of bacteria resistant to cefalexin and may also decrease the
effectiveness of other beta-lactam antimicrobial treatments, due to the potential for
cross-resistance. Therefore, deviation from the instructions must only be undertaken
according to a risk/benefit assessment by the responsible veterinarian.
Do not administer in cases of known resistance to cephalosporins and penicillin.
As with other antibiotics which are excreted mainly by the kidneys, systemic
accumulation may occur when renal function is impaired. In case of known renal
insufficiency the dose should be reduced and substances known to be nephrotoxic
should not be administered concurrently.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals
Penicillins and cephalosporins may cause hypersensitivity (allergy) following
injection, inhalation, ingestion or skin contact. Hypersensitivity to penicillin may lead
to cross-reactions to cephalosporin and vice versa. Allergic reactions to these
substances may occasionally be serious. Do not handle this veterinary medicinal
product if you know you are sensitised or if you have been advised not to be in
contact with such substances.
AN: 00774/2024 & 00775/2024Page 3 of 8
Handle this veterinary medicinal product with great care to avoid exposure, taking all
recommended precautions and take care to avoid prolonged skin contact. When
preparing the reconstituted product, ensure lid is correctly closed before shaking to
mix product. Take care when loading the syringe to avoid spillage.
If you develop symptoms following exposure such as skin rash, you should seek
medical advice and show the doctor this warning. Swelling of the face, lips or eyes or
difficulty breathing are more serious symptoms and require urgent medical attention.
Accidental ingestion may result in gastrointestinal disturbances. In order to reduce
the risk of accidental ingestion by children, close the bottle immediately after use. Do
not leave a syringe containing suspension unattended and ensure syringe is out of
sight and reach of children at all times. In order to prevent children from getting
access to the used syringe, store the bottle and syringe in the outer carton.
When stored in the refrigerator, the oral suspension should be kept in a safe place
out of sight and reach of children.
In case of accidental ingestion, particularly by children, seek medical advice
immediately and show the package leaflet or the label to physician.
Do not smoke, eat or drink while handling the medication.
Wash hands after use.
Special precautions for the protection of the environment:
Not applicable.
In order to ensure efficacy, the veterinary medicinal product should not be used in
combination with bacteriostatic antibiotics.
Concurrent use of first generation cephalosporins with polypeptide antibiotics,
aminoglycosides or some diuretics such as furosemide can enhance nephrotoxicity
risks.
Refer to section 3.3.
Do not open the bottle until the veterinary medicinal product requires reconstitution.
Store below 25° C.
After reconstitution, store the oral suspension in a refrigerator (2° C - 8° C)
Do not freeze the reconstituted suspension.
Keep the bottle in the outer carton in order to protect from light.
Keep the bottle tightly closed.
Not applicable.

This information is sourced from the official Summary of Product Characteristics (SPC) published by the Veterinary Medicines Directorate (VMD). It is provided for informational purposes only and does not replace professional veterinary advice. Always consult your vet before administering any medication.

Medication costs adding up?

Pet insurance can cover prescription medications. Find the right policy for your pet.

Compare insurance

Find cheaper vets near you

Compare vet consultation prices in your area. Save on procedures and get a prescription to buy medications online.