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POM-V Prescription Required Companion Animal

Therios 75 mg Chewable Tablets for Cats

Active ingredient: Cefalexin

Form

Tablet

Species

Cats

Manufacturer

Ceva Sante Animale

VMD MA No.

14966/3069

What it's used for

- Staphylococcus spp. and wounds and abscesses due to spp.

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

Therios 75 mg Chewable Tablets for Cats — SPC Details

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

-
Staphylococcus spp. and wounds and abscesses due to spp.
15 mg cefalexin per kg bodyweight twice daily, equivalent to 1 tablet for 5 kg
bodyweight for:
- 5 days for wounds and abscesses.
- 10 to 14 days in case of urinary tract infections.
- 14 days at least in case of pyoderma. The treatment must be continued for 10 days
once the lesions have disappeared.
To ensure a correct dosage, body weight should be determined as accurately as
possible .
In case of use of half tablets, put the remaining quantity of the tablet back into the blister
pocket and use it for the next administration.
The tablets are flavoured. They can be administered with food or directly into the mouth
of the animal.
Do not use in case of severe kidney failure.
Do not use in animals which are known to be hypersensitive to cephalosporins or any
other substance from the group.
Do not use in rabbits, guinea pigs, hamsters, gerbils and other small rodents.
Cats:
Undetermined frequency (cannot
be estimated from the available
data):
Vomiting, Diarrhoea
Allergic reaction
1
allergic cross-reactivity with other beta lactams may occur.
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 cefalexin and other substance from the β-
lactam group in target pathogens. Use of the product should be carefully considered
when susceptibility testing has shown resistance to antimicrobials of the β-lactam group
because its effectiveness may be reduced.

Special precautions for safe use in the target species:
As with other antibiotics which are excreted mainly by the kidneys, systemic
accumulation may occur when renal function is impaired. In cases of known renal
insufficiency, the dose should be reduced and/or the interval of administration increased
and nephrotoxic drugs should not be administered concurrently.
This veterinary medicinal product should not be used to treat kittens less than 9 weeks
of age.
Use of the veterinary medicinal product in cats weighing less than 2.5 kg should be in
accordance with the benefit/risk assessment performed by the responsible veterinarian.
The chewable tablets are flavoured. In order to avoid any accidental ingestion, store
tablets out of reach of the animals.
Use of the product should be based on identification and susceptibility testing of the
target pathogens. 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. Use of the product should be in accordance with official, national
and regional antimicrobial policies.
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.
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 penicillins may lead to cross-
reactions to cephalosporins and vice versa. Allergic reactions to these substances may
occasionally be serious.
•
sensitised, or if you have been advised not to be in contact with such
substances.
•
taking all recommended precautions. Wash hands after use.
•
seek medical advice and show the doctor this warning. Swelling of the
face, lips or eyes or difficulty in breathing are more serious symptoms and
require urgent medical attention.
•
package leaflet or the label to the doctor.
Special precautions for the protection of the environment:
Not applicable.
The bactericidal activity of cephalosporins is reduced by concomitant administration of
bacteriostatic acting compounds (macrolides, sulfonamides and tetracyclines).
Nephrotoxicity can be increased when 1
st
generation cephalosporins are combined with
polypeptide antibiotics, aminoglycosides or some diuretics (furosemide).
Concomitant use with such active substances should be avoided.
Do not store above 25°C.
Store in the original package.
Return any halved tablet to the opened blister pack.
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.

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